caom2 a general purpose data model for use as the core data model of an astronomical data centre Entitytablecaom2:EntityThis is a base class to persistence. The entity attributes are generally set or updated by persistence implementations. caom2.Entity.id VARCHAR The id is a globally unique identifier (primary key) for an instance. caom2:Entity.id true false true caom2.Entity.lastModified TIMESTAMP The timestamp of last modification of this entity tracks changes in metadata and supports incremental operations. The timestamp is intended to be set and/or updated when the entity is stored (e.g. in a database). caom2:Entity.lastModified false false true caom2.Entity.metaChecksum VARCHAR This checksum of the metadata in this entity signals a change in the metadata of an instance and supports validation (e.g. to compare metadata before and after serialisation or persistence). A change in the metaChecksum can also be used to optimise operations like updating a row in the database only when the metaChecksum changed. A change in metaChecksum normally triggers a change in the lastModified timestamp. The URI must conform to the pattern {algorithm}:{hex value}, for example: \begin{verbatim}md5:4be91751541fd804e7207663a0822f56.\end{verbatim} The checksum of an entity is computed by accumulating byte representation of individual metadata values in the following order: (1) Entity.id for entities, (2) Entity.metaProducer, (3) state fields in alphabetic order (foo.a comes before foo.b) and using depth-first recursion (foo.abc.x comes before foo.def). The lastModified timestamp is not included in the metaChecksum calculation. Null values are ignored so that the addition of new fields in future versions will not change/invalidate existing checksums. Non-null values are converted to bytes as follows: \begin{itemize} \item string: UTF-8 encoded bytes \item URI: UTF-8 encoded bytes of the string representation \item VocabularyTerm: UTF-8 encoded bytes of the term (do not include the namespace) \item enumeration: the literal value converted to bytes \item float: IEEE754 single (4 bytes) \item double: IEEE754 double (8 bytes) \item boolean: convert to single byte, false=0, true=1 (1 byte) \item byte: as-is (1 byte) \item short: (2 bytes, network byte order == big endian)) \item integer: (4 bytes, network byte order == big endian) \item long: (8 bytes, network byte order == big endian) \item date: treat as a long (milliseconds since 1970-01-01 00:00:00 UTC) \end{itemize} TODO: truncatedDates=false, digestFieldNames=true, digestFieldnamesLowerCase=true TODO: external data model components: recursion or specify conversion above (interval, point, shape, multishape) caom2:Entity.metaChecksum false false true caom2.Entity.metaProducer VARCHAR This identifier is used to identify the tools used to produce the metadata. It also implicitly applies to child entities with null metaProducer. The form of the URI is not specified; implementations are free to use this to track metadata curation. For example, a pattern like {organisation}:{software name}-{version} is useful to support a variety of operational uses: query for metadata created by a version with a known bug or query for metadata created by an older version of the software and perform updates. caom2:Entity.metaProducer false false true CaomEntitytablecaom2:CaomEntityThis is an extension of the base Entity class to support accumulated metadata checksums and accumulated lastModified timestamps for entities with child entities. caom2.CaomEntity.id VARCHAR primary/join key for CaomEntity true false true caom2.CaomEntity.maxLastModified TIMESTAMP The maximum last modification timestamp of this entity and all child entities is used to support incremental synchronization (of Observation instances). As with the instance lastModified timestamp above, this timestamp is intended to be set and/or updated when the entity is stored (e.g. in a database). caom2:CaomEntity.maxLastModified false false true caom2.CaomEntity.accMetaChecksum VARCHAR accumulated checksum of the metadata of this entity and all child entities; The URI must conform to the pattern {algorithm}:{hex value}, for example: \begin{verbatim}md5:4be91751541fd804e7207663a0822f56.\end{verbatim} The accumulated checksum of an entity is computed by accumulating the byte representation of entity checksums in the following order: (1) the metaChecksum of the current entity, (2) the accMetaChecksum of all child entities accumulated in order of the child's Entity.id. For an entity with no children, the accMetaChecksum is derived only from the metaChecksum but it is not equal to it because it is a checksum of that checksum and not a checksum of the same metadata directly. caom2:CaomEntity.accMetaChecksum false false true FK_caom2.CaomEntity Entity join back to supertype caom2:Entity caom2:CaomEntity caom2.CaomEntity.id caom2.Entity.id DeletedArtifactDescriptionEventtablecaom2:DeletedArtifactDescriptionEventan event signifiying that a previously persisted ArtifactDescription was deleted; this event can be synchronized to propagate deletions; the Entity.id of the event is equal to the Entity.id of the deleted observation and this identifier is used when performing deletions caom2.DeletedArtifactDescriptionEvent.id VARCHAR primary/join key for DeletedArtifactDescriptionEvent true false true caom2.DeletedArtifactDescriptionEvent.uri VARCHAR The logical identifier of the ArtifactDescription: the ArtifactDescription.uri value; this is for informational purposes only caom2:DeletedArtifactDescriptionEvent.uri false false true FK_caom2.DeletedArtifactDescriptionEvent Entity join back to supertype caom2:Entity caom2:DeletedArtifactDescriptionEvent caom2.DeletedArtifactDescriptionEvent.id caom2.Entity.id DeletedObservationEventtablecaom2:DeletedObservationEventan event signifiying that a previously persisted Observation was deleted; this event can be synchronized to propagate deletions; the Entity.id of the event is equal to the Entity.id of the deleted observation and this identifier is used when performing deletions caom2.DeletedObservationEvent.id VARCHAR primary/join key for DeletedObservationEvent true false true caom2.DeletedObservationEvent.uri VARCHAR The logical identifier of the Observation: the Observation.uri value; this is for informational purposes only caom2:DeletedObservationEvent.uri false false true FK_caom2.DeletedObservationEvent Entity join back to supertype caom2:Entity caom2:DeletedObservationEvent caom2.DeletedObservationEvent.id caom2.Entity.id Observationtablecaom2:ObservationThe observation is the top-level metadata structure that describes astronomical data in a data collection. caom2.Observation.id VARCHAR primary/join key for Observation true false true caom2.Observation.collection VARCHAR The name of the data collection to which this observation belongs. caom2:Observation.collection false false true caom2.Observation.uri VARCHAR A unique logical identifier for this observation. (NEW in CAOM-2.5) TODO: limit this to one of two forms that support use cases? caom2:Observation.uri false false true caom2.Observation.uriBucket VARCHAR This is a short string of hexadecimal digits generated from the uri to support operational use cases (mainly: dividing workload to perform validation in parallel). The value is the first three characters of the hexadecimal representation of SHA-1 of the UTF-8 encoded bytes of the Observation.uri value. (NEW in CAOM-2.5) caom2:Observation.uriBucket false false true caom2.Observation.metaRelease TIMESTAMP This timestamp specifies the point where the metadata for the observation instance is public (can be viewed by anonymous users). A null value means the metadata is nont public. caom2:Observation.metaRelease false false true caom2.Observation.sequenceNumber INTEGER a collection-specific sequence number for observations; re-use or reset is collection specific caom2:Observation.sequenceNumber false false true caom2.Observation.type VARCHAR This describes the general purpose of observation (e.g. FITS OBSTYPE keyword). Existing usage is usually OBJECT for intent = science and other values for intent = calibration. caom2:Observation.type false false true caom2.Observation.intent VARCHAR This is an enumeration that describes the intent of the original creator of the observation. caom2:Observation.intent false false true caom2.Observation.metaReadGroups VARCHAR This is a set of groups with read permission on observation metadata for cases when the metadata is non-public (see metaRelease above). caom2:Observation.metaReadGroups false false true FK_caom2.Observation CaomEntity join back to supertype caom2:CaomEntity caom2:Observation caom2.Observation.id caom2.CaomEntity.id SimpleObservationtablecaom2:SimpleObservationA simple observation is created directly by operating a telescope and instrument (for empirical data) or by a process (for simulation data). Existing usage: the Algorithm.name values 'exposure' and 'simulation' are reserved for these cases respectively. caom2.SimpleObservation.id VARCHAR primary/join key for SimpleObservation true false true FK_caom2.SimpleObservation Observation join back to supertype caom2:Observation caom2:SimpleObservation caom2.SimpleObservation.id caom2.Observation.id DerivedObservationtablecaom2:DerivedObservationA derived observation is an observation created from one or more other observations. Examples of multiple members include: stacks of images combined to increase signal:noise ratio, mosaics combined to increase field-of-view, etc. Examples of single members: subset of comensurally observed data that is attributed/assigned to one proposal or project (with associated permissions). caom2.DerivedObservation.id VARCHAR primary/join key for DerivedObservation true false true caom2.DerivedObservation.members VARCHAR The members are the observations grouped together by the algorithm that defines the derivation. these are the intended components of the composite product, but actual inputs are described by the provenance. Members may be simple or derived observations (arbitrary heirarchy); derived observations with one or more members may be defined such that they only include a subset of each member (they are extracted from the progenitor). Observation.uri values are used here to refer to the member observations. caom2:DerivedObservation.members false false true FK_caom2.DerivedObservation Observation join back to supertype caom2:Observation caom2:DerivedObservation caom2.DerivedObservation.id caom2.Observation.id Planetablecaom2:PlaneA plane is a component of an observation that describes one product of the observation. caom2.Plane.OBSERVATION_ID VARCHAR foreign key column for caom2:Observation composition of caom2:Plane caom2:Observation false false true caom2.Plane.id VARCHAR primary/join key for Plane true false true caom2.Plane.uri VARCHAR A unique logical identifier for this plane. Values of this identifier are used in Plane.provenance.inputs to form a reference from a product to it's progenitors. TODO: limit this to one of two forms that support use cases? (NEW in CAOM-2.5) caom2:Plane.uri false false true caom2.Plane.metaRelease TIMESTAMP This timestamp specifies the point where the metadata for the plane instance is public (can be viewed by anonymous users). A null value means the metadata is not public. The metaRelease timestamp applies to the plane metadata itself and to all artifacts with releaseType=meta. caom2:Plane.metaRelease false false true caom2.Plane.metaReadGroups VARCHAR This is a set of groups with read permission on plane metadata for cases when the metadata is non-public (see metaRelease above). caom2:Plane.metaReadGroups false false true caom2.Plane.dataRelease TIMESTAMP This timestamp specifies the point where the metadata for the plane instance is public (can be viewed by anonymous users). A null value means the metadata is not public. The dataRelease timestamp applies to all artifacts with releaseType=data. caom2:Plane.dataRelease false false true caom2.Plane.dataReadGroups VARCHAR This is a set of groups with read permission on plane data for cases when the data is non-public (see dataRelease above). caom2:Plane.dataReadGroups false false true caom2.Plane.calibrationLevel VARCHAR This describes the degree to which the data is calibrated; it is equivalent to the ObsCore calibration level field. caom2:Plane.calibrationLevel false false true caom2.Plane.dataProductType VARCHAR standard classification of the type of data product; describes the logical data type for the main artifacts caom2:Plane.dataProductType false false true FK_Observation.planes Observation foreign key for caom2:Plane composition in caom2:Observation caom2:Observation.planes caom2.Plane.OBSERVATION_ID caom2.Observation.id FK_caom2.Plane CaomEntity join back to supertype caom2:CaomEntity caom2:Plane caom2.Plane.id caom2.CaomEntity.id Artifacttablecaom2:Artifacta physical product (typically a file) caom2.Artifact.PLANE_ID VARCHAR foreign key column for caom2:Plane composition of caom2:Artifact caom2:Plane false false true caom2.Artifact.id VARCHAR primary/join key for Artifact true false true caom2.Artifact.uri VARCHAR This identifier can be used to interact with an associated data management system. Existing usage: this is an internal identifier that an IVOA DataLink service can convert into a usable link to the data. TODO: There is an informal style used to make sure that these identifiers are globally unique and avoid collisions... caom2:Artifact.uri false false true caom2.Artifact.uriBucket VARCHAR This is a short string of hexadecimal digits generated from the uri to support operational use cases (mainly: dividing workload to perform validation in parallel). The value is the first three characters of the hexadecimal representation of SHA-1 of the UTF-8 encoded bytes of the Observation.uri value. (NEW in CAOM-2.5) caom2:Artifact.uriBucket false false true caom2.Artifact.productType VARCHAR the relationship of this Artifact to the parent Plane (DataLink semantics) caom2:Artifact.productType false false true caom2.Artifact.releaseType VARCHAR This field indicates whether this artifact is treated as data or metadata when determining access permission. Existing usage: some collections have small previews (productType=thumbnail) that are considered metadata and are thus viewable by all users. caom2:Artifact.releaseType false false true caom2.Artifact.contentType VARCHAR This field specifies the format of the resolved artifact: should be a MIME-type. caom2:Artifact.contentType false false true caom2.Artifact.contentLength INTEGER This specifies the size of the stored artifact; for files, this is the file size. caom2:Artifact.contentLength false false true caom2.Artifact.contentChecksum VARCHAR this is the checksum of the artifact data; the URI must conform to the pattern {algorithm}:{hex value}, for example: \begin{verbatim} md5:4be91751541fd804e7207663a0822f56 \end{verbatim} caom2:Artifact.contentChecksum false false true caom2.Artifact.contentRelease TIMESTAMP This timestamp after which content for the artifact is public. If set, this value overrides the permission implied by the releaseType and Plane release dates. Existing usage: MAST?. caom2:Artifact.contentRelease false false true caom2.Artifact.contentReadGroups VARCHAR Thsi is a set of groups that are allowed to access the content of this artifact. If set, thisd overrides the permission implied by the releaseType and PLane release groups. Existing usage: unknown. caom2:Artifact.contentReadGroups false false true caom2.Artifact.descriptionID VARCHAR This is an identifier to refer to an ArtifactDescription entity. (new in CAOM-2.5) Use case: provide standard descriptions for links in a DataLink response. caom2:Artifact.descriptionID false false true FK_Plane.artifacts Plane foreign key for caom2:Artifact composition in caom2:Plane caom2:Plane.artifacts caom2.Artifact.PLANE_ID caom2.Plane.id FK_caom2.Artifact CaomEntity join back to supertype caom2:CaomEntity caom2:Artifact caom2.Artifact.id caom2.CaomEntity.id ArtifactDescriptiontablecaom2:ArtifactDescriptionThe provides a referenceable description of artitfacts for use in DataLink responses. (NEW in CAOM-2.5) caom2.ArtifactDescription.id VARCHAR primary/join key for ArtifactDescription true false true caom2.ArtifactDescription.uri VARCHAR This is the logical identifier for this description used to refer to it from an artifact. Anticipated usage: this is an internal identifier that an IVOA DataLink service can use to lookup a description. TODO: There is an informal style used for Atifact.uri to make sure that these identifiers are globally unique and avoid collisions... caom2:ArtifactDescription.uri false false true caom2.ArtifactDescription.description VARCHAR A human-readable description of an artifact. caom2:ArtifactDescription.description false false true FK_caom2.ArtifactDescription Entity join back to supertype caom2:Entity caom2:ArtifactDescription caom2.ArtifactDescription.id caom2.Entity.id Algorithmtablecaom2:Algorithmthe algorithm that was responsible for creating the observation; for a DerivedObservation this is the algorithm that defines the intended set of members to include caom2.Algorithm.ID BIGINT primary key for Algorithm true false true caom2.Algorithm.name VARCHAR common name of the algorithm; the value 'exposure' is reserved for use in SimpleObservation; TBD: publish a list of acceptable values as a machine-readable vocabulary? caom2:Algorithm.name false false true Telescopetablecaom2:Telescopethe telescope used to acquire the data for an observation caom2.Telescope.ID BIGINT primary key for Telescope true false true caom2.Telescope.name VARCHAR common name of the telescope; TBD: reference to a standard list of names? caom2:Telescope.name false false true caom2.Telescope.geoLocationX DOUBLE x-coordinate of the geocentric location of the telescope at the time of observation (see FITS WCS Paper III) caom2:Telescope.geoLocationX false false true caom2.Telescope.geoLocationY DOUBLE y-coordinate of the geocentric location of the telescope at the time of observation (see FITS WCS Paper III) caom2:Telescope.geoLocationY false false true caom2.Telescope.geoLocationZ DOUBLE z-coordinate of the geocentric location of the telescope at the time of observation (see FITS WCS Paper III) caom2:Telescope.geoLocationZ false false true caom2.Telescope.keywords VARCHAR additional keywords that describe the telescope or telscope configuration at the time of observation; keywords cannot contain the pipe (|) character - it is reserved for use in persistence systems (e.g. to store all keywords in a single column in a table) caom2:Telescope.keywords false false true caom2.Telescope.trackingMode VARCHAR term from the (currently non-existent) IVOA Tracking vocabulary used to indicate how the telescope moves during data acquisition caom2:Telescope.trackingMode false false true Instrumenttablecaom2:Instrumentthe instrument used to acquire or create the observation; this could be used for both physical instruments that acquire data or software that generates it (e.g. simulated data) caom2.Instrument.ID BIGINT primary key for Instrument true false true caom2.Instrument.name VARCHAR common name for the instrument caom2:Instrument.name false false true caom2.Instrument.keywords VARCHAR additional keywords that describe the instrument or instrument configuration at the time of observation; keywords cannot contain the pipe (|) character - it is reserved for use in persistence systems (e.g. to store all keywords in a single column in a table) caom2:Instrument.keywords false false true Environmenttablecaom2:Environmentcollection of measured quantities that characterise the environment at the time of observation caom2.Environment.ID BIGINT primary key for Environment true false true caom2.Environment.name DOUBLE typical atmospheric distortion (full-width-half-max of a point source) caom2:Environment.name false false true caom2.Environment.humidity DOUBLE fractional relative humidity [0,1] caom2:Environment.humidity false false true caom2.Environment.elevation DOUBLE angular elevation above horizon [0,90] caom2:Environment.elevation false false true caom2.Environment.tau DOUBLE the opacity of the atmosphere [0,1] caom2:Environment.tau false false true caom2.Environment.wavelengthTau DOUBLE wavelength at which opacity was measured caom2:Environment.wavelengthTau false false true caom2.Environment.ambientTemp DOUBLE ambient temperature at the telescope caom2:Environment.ambientTemp false false true caom2.Environment.photometric INTEGER indicator that flux and/or color calibration is stable caom2:Environment.photometric false false true Proposaltablecaom2:Proposaldescription of the science proposal or programme that initiated the observation caom2.Proposal.id VARCHAR collection-specific identifier for the proposal caom2:Proposal.id true false true caom2.Proposal.pi VARCHAR proper name of the principal investigator caom2:Proposal.pi false false true caom2.Proposal.project VARCHAR common name of the project this proposal belongs to; typically used for larger or long-running projects that include mutliple proposals caom2:Proposal.project false false true caom2.Proposal.title VARCHAR title of the proposal caom2:Proposal.title false false true caom2.Proposal.keywords VARCHAR additional keywords that describe the science goals of the proposal; keywords cannot contain the pipe (|) character - it is reserved for use in persistence systems (e.g. to store all keywords in a single column in a table) caom2:Proposal.keywords false false true caom2.Proposal.reference VARCHAR identifier for external resource with proposal details caom2:Proposal.reference false false true Targettablecaom2:Targetthe target of an observation caom2.Target.ID BIGINT primary key for Target true false true caom2.Target.name VARCHAR proper name of the target caom2:Target.name false false true caom2.Target.targetID VARCHAR resolvable target identifier; the targetID URI should be of the form {scheme}:{id} so it can be resolved (for example: naif:170100) caom2:Target.targetID false false true caom2.Target.type_namespace VARCHAR vocabulary term used in CAOM; this class defines constants for the CAOM TargetType vocabulary (CHANGED from enumeration in CAOM-2.4) caom2:TargetType false false true caom2.Target.type_term VARCHAR vocabulary term used in CAOM; this class defines constants for the CAOM TargetType vocabulary (CHANGED from enumeration in CAOM-2.4) caom2:TargetType false false true caom2.Target.redshift DOUBLE cosmological redshift of the target caom2:Target.redshift false false true caom2.Target.standard INTEGER indicates that the target is typically used as a standard (astrometric, photometric, etc) caom2:Target.standard false false true caom2.Target.moving INTEGER indicates that the target is a moving object; used for solar system objects but not high proper motion stars caom2:Target.moving false false true caom2.Target.keywords VARCHAR additional keywords that describe the target; keywords cannot contain the pipe (|) character - it is reserved for use in persistence systems (e.g. to store all keywords in a single column in a table) caom2:Target.keywords false false true TargetPositiontablecaom2:TargetPositionthe intended position of the observation (not the position of the intended or actual target) caom2.TargetPosition.ID BIGINT primary key for TargetPosition true false true caom2.TargetPosition.coordsys VARCHAR the coordinate system of the coordinates caom2:TargetPosition.coordsys false false true caom2.TargetPosition.equinox DOUBLE the equinox of the coordinates caom2:TargetPosition.equinox false false true Requirementstablecaom2:Requirementsthe observational requirements specified by the proposal caom2.Requirements.ID BIGINT primary key for Requirements true false true caom2.Requirements.flag_namespace VARCHAR vocabulary term used in CAOM; this class defines constants for the CAOM Status vocabulary (CHANGED from enumeration in CAOM-2.4) caom2:Status false false true caom2.Requirements.flag_term VARCHAR vocabulary term used in CAOM; this class defines constants for the CAOM Status vocabulary (CHANGED from enumeration in CAOM-2.4) caom2:Status false false true Provenancetablecaom2:Provenancedescription of how this data was produced caom2.Provenance.ID BIGINT primary key for Provenance true false true caom2.Provenance.name VARCHAR collection-specific common name of the process caom2:Provenance.name false false true caom2.Provenance.reference VARCHAR identifier for external resource with proposal details caom2:Provenance.reference false false true caom2.Provenance.version VARCHAR version of the software or process that produced the data caom2:Provenance.version false false true caom2.Provenance.project VARCHAR name of the project that produced the data; data produced in a uniform way are typically labelled with the same project name caom2:Provenance.project false false true caom2.Provenance.producer VARCHAR common name of the entity (person, institute, etc) responsible for producing the data caom2:Provenance.producer false false true caom2.Provenance.runID VARCHAR collection-specific identifier for the processing instance that produced the data; this identifier can typcially be traced in log files or logging systems caom2:Provenance.runID false false true caom2.Provenance.lastExecuted VARCHAR timestamp describing when this process last ran and produced data caom2:Provenance.lastExecuted false false true caom2.Provenance.keywords VARCHAR additional keywords that describe the processing; this may include both general descriptive words and those specific to this particular execution of the processing; keywords cannot contain the pipe (|) character - it is reserved for use in persistence systems (e.g. to store all keywords in a single column in a table) caom2:Provenance.keywords false false true caom2.Provenance.inputs VARCHAR local identifier for input planes; these are the actual inputs that went into the product caom2:Provenance.inputs false false true Observabletablecaom2:Observabledescription of the sample (pixel) values caom2.Observable.ID BIGINT primary key for Observable true false true caom2.Observable.ucd_namespace VARCHAR term from the UCD1+ vocabulary (NEW from enumeration in CAOM-2.5) caom2:UCDTerm false false true caom2.Observable.ucd_term VARCHAR term from the UCD1+ vocabulary (NEW from enumeration in CAOM-2.5) caom2:UCDTerm false false true caom2.Observable.calibration_namespace VARCHAR This is a proposal for the creation of a IVOA calibration-status vocabulary. This vocabulary can be created using optional terms in the ObsCore standard to describe the calibration of each axis in the data separately. (NEW in CAOM-2.5) caom2:CalibrationStatus false false true caom2.Observable.calibration_term VARCHAR This is a proposal for the creation of a IVOA calibration-status vocabulary. This vocabulary can be created using optional terms in the ObsCore standard to describe the calibration of each axis in the data separately. (NEW in CAOM-2.5) caom2:CalibrationStatus false false true DataQualitytablecaom2:DataQualitydescription of the data quality caom2.DataQuality.ID BIGINT primary key for DataQuality true false true caom2.DataQuality.flag_namespace VARCHAR vocabulary term used in CAOM; this class defines constants for the CAOM Quality vocabulary (CHANGED from enumeration in CAOM-2.4) caom2:Quality false false true caom2.DataQuality.flag_term VARCHAR vocabulary term used in CAOM; this class defines constants for the CAOM Quality vocabulary (CHANGED from enumeration in CAOM-2.4) caom2:Quality false false true Metricstablecaom2:Metricscollection of measured quantities that describe the content of the data caom2.Metrics.ID BIGINT primary key for Metrics true false true caom2.Metrics.sourceNumberDensity DOUBLE number of sources detected per unit area caom2:Metrics.sourceNumberDensity false false true caom2.Metrics.background DOUBLE background level caom2:Metrics.background false false true caom2.Metrics.backgroundStddev DOUBLE standard deviation in the background level caom2:Metrics.backgroundStddev false false true caom2.Metrics.fluxDensityLimit DOUBLE flux density with a signal:noise ratio of 10 caom2:Metrics.fluxDensityLimit false false true caom2.Metrics.magLimit DOUBLE magnitude with a signal:noise ratio of 10 caom2:Metrics.magLimit false false true caom2.Metrics.sampleSNR DOUBLE signal:noise ratio for a representative subset of samples caom2:Metrics.sampleSNR false false true Positiontablecaom2:Positiondescription of the position coverage and sampling of the data caom2.Position.ID BIGINT primary key for Position true false true caom2.Position.dimension_naxis1 INTEGER dimension (number of pixels) for a two-dimensional axis caom2:types.Dimension2D false false true caom2.Position.dimension_naxis2 INTEGER dimension (number of pixels) for a two-dimensional axis caom2:types.Dimension2D false false true caom2.Position.maxRecoverableScale_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Position.maxRecoverableScale_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Position.resolution DOUBLE mean spatial resolution (full-width-half-max) per pixel caom2:Position.resolution false false true caom2.Position.resolutionBounds_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Position.resolutionBounds_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Position.sampleSize DOUBLE median pixel size caom2:Position.sampleSize false false true caom2.Position.calibration_namespace VARCHAR This is a proposal for the creation of a IVOA calibration-status vocabulary. This vocabulary can be created using optional terms in the ObsCore standard to describe the calibration of each axis in the data separately. (NEW in CAOM-2.5) caom2:CalibrationStatus false false true caom2.Position.calibration_term VARCHAR This is a proposal for the creation of a IVOA calibration-status vocabulary. This vocabulary can be created using optional terms in the ObsCore standard to describe the calibration of each axis in the data separately. (NEW in CAOM-2.5) caom2:CalibrationStatus false false true Energytablecaom2:Energydescription of the energy coverage and sampling of the data caom2.Energy.ID BIGINT primary key for Energy true false true caom2.Energy.bounds_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Energy.bounds_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Energy.energyBands VARCHAR standard name of the energy regime(s) included in the data caom2:Energy.energyBands false false true caom2.Energy.dimension INTEGER number of measurements (pixels) on the energy axis caom2:Energy.dimension false false true caom2.Energy.resolvingPower DOUBLE mean spectral resolving power per pixel (relative resolution) caom2:Energy.resolvingPower false false true caom2.Energy.resolvingPowerBounds_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Energy.resolvingPowerBounds_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Energy.resolution DOUBLE mean absolute spectral resolution per pixel (new in CAOM-2.5) caom2:Energy.resolution false false true caom2.Energy.resolutionBounds_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Energy.resolutionBounds_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Energy.sampleSize DOUBLE mean pixel size caom2:Energy.sampleSize false false true caom2.Energy.bandpassName VARCHAR telescope- and instrument-specific name for the energy band(s) included; multiple bands may be included if energies from all specified bands are included in the data (in the sense of union) caom2:Energy.bandpassName false false true caom2.Energy.restwav DOUBLE rest energy of the target energy transition (name changed in CAOM-2.5) caom2:Energy.restwav false false true caom2.Energy.calibration_namespace VARCHAR This is a proposal for the creation of a IVOA calibration-status vocabulary. This vocabulary can be created using optional terms in the ObsCore standard to describe the calibration of each axis in the data separately. (NEW in CAOM-2.5) caom2:CalibrationStatus false false true caom2.Energy.calibration_term VARCHAR This is a proposal for the creation of a IVOA calibration-status vocabulary. This vocabulary can be created using optional terms in the ObsCore standard to describe the calibration of each axis in the data separately. (NEW in CAOM-2.5) caom2:CalibrationStatus false false true caom2.Energy.transition_species VARCHAR caom2:EnergyTransition false false true caom2.Energy.transition_transition VARCHAR caom2:EnergyTransition false false true Timetablecaom2:Timedescription of the time coverage and sampling of the data caom2.Time.ID BIGINT primary key for Time true false true caom2.Time.bounds_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Time.bounds_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Time.calibration_namespace VARCHAR This is a proposal for the creation of a IVOA calibration-status vocabulary. This vocabulary can be created using optional terms in the ObsCore standard to describe the calibration of each axis in the data separately. (NEW in CAOM-2.5) caom2:CalibrationStatus false false true caom2.Time.calibration_term VARCHAR This is a proposal for the creation of a IVOA calibration-status vocabulary. This vocabulary can be created using optional terms in the ObsCore standard to describe the calibration of each axis in the data separately. (NEW in CAOM-2.5) caom2:CalibrationStatus false false true caom2.Time.dimension INTEGER number of discrete samples (pixels) on the time axis caom2:Time.dimension false false true caom2.Time.resolution DOUBLE median temporal resolution per pixel caom2:Time.resolution false false true caom2.Time.resolutionBounds_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Time.resolutionBounds_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Time.sampleSize DOUBLE median pixel size caom2:Time.sampleSize false false true caom2.Time.exposure DOUBLE mean exposure time per pixel caom2:Time.exposure false false true caom2.Time.exposureBounds_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Time.exposureBounds_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true Polarizationtablecaom2:Polarizationdescription of polarization measurements included in the data caom2.Polarization.ID BIGINT primary key for Polarization true false true caom2.Polarization.states VARCHAR standard polarization states included (CHANGED cardinality in CAOM-2.5) caom2:Polarization.states false false true caom2.Polarization.dimension INTEGER number of polarization states included caom2:Polarization.dimension false false true CustomAxistablecaom2:CustomAxisdescription of a custom coordinate axis (new in CAOM-2.4) caom2.CustomAxis.ID BIGINT primary key for CustomAxis true false true caom2.CustomAxis.ctype VARCHAR coordinate type code caom2:CustomAxis.ctype false false true caom2.CustomAxis.bounds_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.CustomAxis.bounds_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.CustomAxis.dimension INTEGER number of discrete samples (pixels) along custom axis caom2:CustomAxis.dimension false false true Visibilitytablecaom2:Visibilitydescription of a UV-plane for interferometry data (new in CAOM-2.5) caom2.Visibility.ID BIGINT primary key for Visibility true false true caom2.Visibility.distance_lower DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Visibility.distance_upper DOUBLE a set of numeric values defined by a lower and upper bound (bounds included: [a,b]) caom2:types.Interval false false true caom2.Visibility.distributionEccentricity DOUBLE eccentricity of the distribtuion of ??? in [0,1] caom2:Visibility.distributionEccentricity false false true caom2.Visibility.distributionFill DOUBLE fill-factor of the distribtuion of ??? in [0,1] caom2:Visibility.distributionFill false false true Pointtablecaom2:types.Pointlocation on the sky caom2.Point.ID BIGINT primary key for Point true false true caom2.Point.POLYGON_ID BIGINT foreign key column for caom2:types.Polygon composition of caom2:types.Point caom2:types.Polygon false false true caom2.Point.cval1 DOUBLE caom2:types.Point.cval1 false false true caom2.Point.cval2 DOUBLE caom2:types.Point.cval2 false false true FK_Polygon.points Polygon foreign key for caom2:types.Point composition in caom2:types.Polygon caom2:types.Polygon.points caom2.Point.POLYGON_ID caom2.Polygon.ID Shapetablecaom2:types.Shape caom2.Shape.ID BIGINT primary key for Shape true false true caom2.Shape.MULTISHAPE_ID BIGINT foreign key column for caom2:types.MultiShape composition of caom2:types.Shape caom2:types.MultiShape false false true FK_MultiShape.shapes MultiShape foreign key for caom2:types.Shape composition in caom2:types.MultiShape caom2:types.MultiShape.shapes caom2.Shape.MULTISHAPE_ID caom2.MultiShape.ID Circletablecaom2:types.Circlea circular region on the sky caom2.Circle.ID BIGINT primary/join key for Circle true false true caom2.Circle.radius DOUBLE caom2:types.Circle.radius false false true FK_types.Circle Shape join back to supertype caom2:types.Shape caom2:types.Circle caom2.Circle.ID caom2.Shape.ID MultiShapetablecaom2:types.MultiShapemultiple simple shapess describing disconnected regions as a single value caom2.MultiShape.ID BIGINT primary key for MultiShape true false true Polygontablecaom2:types.Polygona simple polygon region on the sky defined a sequence of points connected by great-circle segments caom2.Polygon.ID BIGINT primary/join key for Polygon true false true FK_types.Polygon Shape join back to supertype caom2:types.Shape caom2:types.Polygon caom2.Polygon.ID caom2.Shape.ID IntervalMtablecaom2:types.IntervalMan interval that can appear in a composition caom2.IntervalM.ID BIGINT primary key for IntervalM true false true caom2.IntervalM.ENERGY_ID BIGINT foreign key column for caom2:Energy composition of caom2:types.IntervalM caom2:Energy false false true caom2.IntervalM.TIME_ID BIGINT foreign key column for caom2:Time composition of caom2:types.IntervalM caom2:Time false false true caom2.IntervalM.CUSTOMAXIS_ID BIGINT foreign key column for caom2:CustomAxis composition of caom2:types.IntervalM caom2:CustomAxis false false true caom2.IntervalM.lower DOUBLE caom2:types.IntervalM.lower false false true caom2.IntervalM.upper DOUBLE caom2:types.IntervalM.upper false false true FK_Energy.samples Energy foreign key for caom2:types.IntervalM composition in caom2:Energy caom2:Energy.samples caom2.IntervalM.ENERGY_ID caom2.Energy.ID FK_Time.samples Time foreign key for caom2:types.IntervalM composition in caom2:Time caom2:Time.samples caom2.IntervalM.TIME_ID caom2.Time.ID FK_CustomAxis.samples CustomAxis foreign key for caom2:types.IntervalM composition in caom2:CustomAxis caom2:CustomAxis.samples caom2.IntervalM.CUSTOMAXIS_ID caom2.CustomAxis.ID