XML Schema "VODataService-v1.1.xsd"
Target Namespace:
http://www.ivoa.net/xml/VODataService/v1.1
Version:
1.1pr1
Defined Components:
31 local elements, 22 complexTypes, 4 simpleTypes
Default Namespace-Qualified Form:
Local Elements: unqualified; Local Attributes: unqualified
Schema Location:
http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService-v1.1.xsd; see XML source
Imports Schemas (2):
stc-v1.30.xsd [src], VOResource-v1.1.xsd [src]
Imported by Schema:
VOSITables-v1.0.xsd [src]
Annotation
An extension to the core resource metadata (VOResource) for describing data collections and services.
XML Source
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="unqualified" targetNamespace="http://www.ivoa.net/xml/VODataService/v1.1" version="1.1pr1" xmlns:stc="http://www.ivoa.net/xml/STC/stc-v1.30.xsd" xmlns:vm="http://www.ivoa.net/xml/VOMetadata/v0.1" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:annotation>
<xs:appinfo>
<vm:schemaName>VODataService</vm:schemaName>
<vm:schemaPrefix>xs</vm:schemaPrefix>
<vm:targetPrefix>vs</vm:targetPrefix>
</xs:appinfo>
<xs:documentation>
An extension to the core resource metadata (VOResource) for
describing data collections and services.
</xs:documentation>
</xs:annotation>
<xs:complexType name="DataCollection">
<xs:annotation>
<xs:documentation>
A logical grouping of data which, in general, is composed of one
or more accessible datasets. A collection can contain any
combination of images, spectra, catalogs, or other data.
</xs:documentation>
<xs:documentation>
(A dataset is a collection of digitally-encoded data that
is normally accessible as a single unit, e.g. a file.)
</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="vr:Resource">
<xs:sequence>
<xs:element maxOccurs="unbounded" minOccurs="0" name="facility" type="vr:ResourceName">
<xs:annotation>
<xs:appinfo>
<vm:dcterm>Subject</vm:dcterm>
</xs:appinfo>
<xs:documentation>
the observatory or facility used to collect the data
contained or managed by this resource.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="instrument" type="vr:ResourceName">
<xs:annotation>
<xs:appinfo>
<vm:dcterm>Subject</vm:dcterm>
<vm:dcterm>Subject.Instrument</vm:dcterm>
</xs:appinfo>
<xs:documentation>
the Instrument used to collect the data contain or
managed by a resource.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="rights" type="vr:Rights">
<xs:annotation>
<xs:appinfo>
<vm:dcterm>Rights</vm:dcterm>
</xs:appinfo>
<xs:documentation>
Information about rights held in and over the resource.
</xs:documentation>
<xs:documentation>
This should be repeated for all Rights values that apply.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="format" type="vs:Format">
<xs:annotation>
<xs:documentation>
The physical or digital manifestation of the information
supported by a resource.
</xs:documentation>
<xs:documentation>
MIME types should be used for network-retrievable, digital
data. Non-MIME type values are used for media that cannot
be retrieved over the network--e.g. CDROM, poster, slides,
video cassette, etc.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="coverage" type="vs:Coverage">
<xs:annotation>
<xs:documentation>
Extent of the content of the resource over space, time,
and frequency.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="tableset" type="vs:TableSet">
<xs:annotation>
<xs:documentation>
A description of the tables that are part of this
collection.
</xs:documentation>
<xs:documentation>
Each schema name and each table name must be
unique within this tableset.
</xs:documentation>
</xs:annotation>
<xs:unique name="DataCollection-schemaName">
<xs:selector xpath="schema"/>
<xs:field xpath="name"/>
</xs:unique>
<xs:unique name="DataCollection-tableName">
<xs:selector xpath="schema/table"/>
<xs:field xpath="name"/>
</xs:unique>
</xs:element>
<xs:element minOccurs="0" name="accessURL" type="vr:AccessURL">
<xs:annotation>
<xs:documentation>
The URL that can be used to download the data contained in
this data collection.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="Coverage">
<xs:annotation>
<xs:documentation>
A description of how a resource's contents or behavior maps
to the sky, to time, and to frequency space, including
coverage and resolution.
</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element minOccurs="0" ref="stc:STCResourceProfile">
<xs:annotation>
<xs:documentation>
The STC description of the location of the resource's
data (or behavior on data) on the sky, in time, and in
frequency space, including resolution.
</xs:documentation>
<xs:documentation>
In general, this description should be approximate; a
more precise description can be provided by the
footprint service.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="footprint" type="vs:ServiceReference">
<xs:annotation>
<xs:documentation>
a reference to a footprint service for retrieving
precise and up-to-date description of coverage.
</xs:documentation>
<xs:documentation>
the ivo-id attribute refers to a Service record
that describes the Footprint capability. That is,
the record will have a capability element describing
the service. The resource refered to may be the
current one.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="waveband" type="vs:Waveband">
<xs:annotation>
<xs:appinfo>
<vm:dcterm>Coverage.Spectral</vm:dcterm>
</xs:appinfo>
<xs:documentation>
a named spectral region of the electro-magnetic spectrum
that the resource's spectral coverage overlaps with.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="regionOfRegard" type="xs:float">
<xs:annotation>
<xs:appinfo>
<vm:dcterm>Coverage.RegionOfRegard</vm:dcterm>
</xs:appinfo>
<xs:documentation>
a single numeric value representing the angle, given
in decimal degrees, by which a positional query
against this resource should be "blurred" in order
to get an appropriate match.
</xs:documentation>
<xs:documentation>
In the case of image repositories, it might refer to
a typical field-of-view size, or the primary beam
size for radio aperture synthesis data. In the case
of object catalogs RoR should normally be the
largest of the typical size of the objects, the
astrometric errors in the positions, or the
resolution of the data.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:complexType name="ServiceReference">
<xs:annotation>
<xs:documentation>
the service URL for a potentially registerd service. That is,
if an IVOA identifier is also provided, then the service is
described in a registry.
</xs:documentation>
</xs:annotation>
<xs:simpleContent>
<xs:extension base="xs:anyURI">
<xs:attribute name="ivo-id" type="vr:IdentifierURI">
<xs:annotation>
<xs:documentation>
The URI form of the IVOA identifier for the service
describing the capability refered to by this element.
</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:simpleType name="Waveband">
<xs:restriction base="xs:token">
<xs:enumeration value="Radio">
<xs:annotation>
<xs:documentation>
wavelength &gt;= 10 mm; frequency &lt;= 30 GHz.
</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="Millimeter">
<xs:annotation>
<xs:documentation>
0.1 mm &lt;= wavelength &lt;= 10 mm;
3000 GHz &gt;= frequency &gt;= 30 GHz.
</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="Infrared">
<xs:annotation>
<xs:documentation>
1 micron &lt;= wavelength &lt;= 100 micons
</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="Optical">
<xs:annotation>
<xs:documentation>
0.3 microns &lt;= wavelength &lt;= 1 micon;
300 nm &lt;= wavelength &lt;= 1000 nm;
3000 Angstroms &lt;= wavelength &lt;= 10000 Angstroms
</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="UV">
<xs:annotation>
<xs:documentation>
0.1 microns &lt;= wavelength &lt;= 0.3 micon;
1000 nm &lt;= wavelength &lt;= 3000 nm;
1000 Angstroms &lt;= wavelength &lt;= 30000 Angstroms
</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="EUV">
<xs:annotation>
<xs:documentation>
100 Angstroms &lt;= wavelength &lt;= 1000 Angstroms;
12 eV &lt;= energy &lt;= 120 eV
</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="X-ray">
<xs:annotation>
<xs:documentation>
0.1 Angstroms &lt;= wavelength &lt;= 100 Angstroms;
0.12 keV &lt;= energy &lt;= 120 keV
</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="Gamma-ray">
<xs:annotation>
<xs:documentation>
energy &gt;= 120 keV
</xs:documentation>
</xs:annotation>
</xs:enumeration>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="TableSet">
<xs:annotation>
<xs:documentation>
The set of tables hosted by a resource.
</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element maxOccurs="unbounded" minOccurs="1" name="schema" type="vs:TableSchema">
<xs:annotation>
<xs:documentation>
A named description of a set of logically related tables.
</xs:documentation>
<xs:documentation>
The name given by the "name" child element must
be unique within this TableSet instance. If there is
only one schema in this set and/or there's no locally
appropriate name to provide, the name can be set to
"default".
</xs:documentation>
<xs:documentation>
This aggregation does not need to map to an
actual database, catalog, or schema, though the
publisher may choose to aggregate along such
designations, or particular service protocol may
recommend it.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
<xs:anyAttribute namespace="##other"/>
</xs:complexType>
<xs:complexType name="TableSchema">
<xs:annotation>
<xs:documentation>
A detailed description of a logically-related set of tables
</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element maxOccurs="1" minOccurs="1" name="name" type="xs:token">
<xs:annotation>
<xs:documentation>
A name for the set of tables.
</xs:documentation>
<xs:documentation>
This is used to uniquely identify the table set among
several table sets. If a title is not present, this
name can be used for display purposes.
</xs:documentation>
<xs:documentation>
If there is no appropriate logical name associated with
this set, the name should be explicitly set to
"default".
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="title" type="xs:token">
<xs:annotation>
<xs:documentation>
a descriptive, human-interpretable name for the table set.
</xs:documentation>
<xs:documentation>
This is used for display purposes. There is no requirement
regarding uniqueness. It is useful when there are
multiple schemas in the context (e.g. within a
tableset; otherwise, the resource title could be
used instead).
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="1" minOccurs="0" name="description" type="xs:token">
<xs:annotation>
<xs:documentation>
A free text description of the tableset that should
explain in general how all of the tables are related.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="utype" type="xs:token">
<xs:annotation>
<xs:documentation>
an identifier for a concept in a data model that
the data in this schema as a whole represent.
</xs:documentation>
<xs:documentation>
The format defined in the VOTable standard is strongly
recommended.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="table" type="vs:Table">
<xs:annotation>
<xs:documentation>
A description of one of the tables that makes up the set.
</xs:documentation>
<xs:documentation>
The table names for the table should be unique.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
<xs:anyAttribute namespace="##other"/>
</xs:complexType>
<xs:complexType name="Format">
<xs:simpleContent>
<xs:extension base="xs:token">
<xs:attribute default="false" name="isMIMEType" type="xs:boolean">
<xs:annotation>
<xs:documentation>
if true, then the content is a MIME Type
</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:complexType name="DataService">
<xs:annotation>
<xs:documentation>
A service for accessing astronomical data
</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="vr:Service">
<xs:sequence>
<xs:element maxOccurs="unbounded" minOccurs="0" name="facility" type="vr:ResourceName">
<xs:annotation>
<xs:appinfo>
<vm:dcterm>Subject</vm:dcterm>
</xs:appinfo>
<xs:documentation>
the observatory or facility used to collect the data
contained or managed by this resource.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="instrument" type="vr:ResourceName">
<xs:annotation>
<xs:appinfo>
<vm:dcterm>Subject</vm:dcterm>
<vm:dcterm>Subject.Instrument</vm:dcterm>
</xs:appinfo>
<xs:documentation>
the Instrument used to collect the data contain or
managed by a resource.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="coverage" type="vs:Coverage">
<xs:annotation>
<xs:documentation>
Extent of the content of the resource over space, time,
and frequency.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="ParamHTTP">
<xs:annotation>
<xs:documentation>
A service invoked via an HTTP Query (either Get or Post)
with a set of arguments consisting of keyword name-value pairs.
</xs:documentation>
<xs:documentation>
Note that the URL for help with this service can be put into
the Service/ReferenceURL element.
</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="vr:Interface">
<xs:sequence>
<xs:element maxOccurs="2" minOccurs="0" name="queryType" type="vs:HTTPQueryType">
<xs:annotation>
<xs:documentation>
The type of HTTP request, either GET or POST.
</xs:documentation>
<xs:documentation>
The service may indicate support for both GET
and POST by providing 2 queryType elements, one
with GET and one with POST.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="1" minOccurs="0" name="resultType" type="xs:token">
<xs:annotation>
<xs:documentation>
The MIME type of a document returned in the HTTP response.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="param" type="vs:InputParam">
<xs:annotation>
<xs:documentation>
a description of a input parameter that can be
provided as a name=value argument to the service.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:simpleType name="HTTPQueryType">
<xs:annotation>
<xs:documentation>
The type of HTTP request, either GET or POST.
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:token">
<xs:enumeration value="GET"/>
<xs:enumeration value="POST"/>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="CatalogService">
<xs:annotation>
<xs:documentation>
A service that interacts with with astronomical data
through one or more specified tables.
</xs:documentation>
<xs:documentation>
A table with sky coverage typically have columns that give
longitude-latitude positions in some coordinate system.
</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="vs:DataService">
<xs:sequence>
<xs:element minOccurs="0" name="tableset" type="vs:TableSet">
<xs:annotation>
<xs:documentation>
A description of the tables that are accessible
through this service.
</xs:documentation>
<xs:documentation>
Each schema name and each table name must be
unique within this tableset.
</xs:documentation>
</xs:annotation>
<xs:unique name="CatalogService-schemaName">
<xs:selector xpath="schema"/>
<xs:field xpath="name"/>
</xs:unique>
<xs:unique name="CatalogService-tableName">
<xs:selector xpath="schema/table"/>
<xs:field xpath="name"/>
</xs:unique>
</xs:element>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="Table">
<xs:sequence>
<xs:element maxOccurs="1" minOccurs="1" name="name" type="xs:token">
<xs:annotation>
<xs:documentation>
the fully qualified name of the table. This name
should include all catalog or schema prefixes
needed to sufficiently uniquely distinguish it in a
query.
</xs:documentation>
<xs:documentation>
In general, the format of the qualified name may
depend on the context; however, when the
table is intended to be queryable via ADQL, then the
catalog and schema qualifiers are delimited from the
table name with dots (.).
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="title" type="xs:token">
<xs:annotation>
<xs:documentation>
a descriptive, human-interpretable name for the table.
</xs:documentation>
<xs:documentation>
This is used for display purposes. There is no requirement
regarding uniqueness.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="description" type="xs:token">
<xs:annotation>
<xs:documentation>
a free-text description of the table's contents
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="utype" type="xs:token">
<xs:annotation>
<xs:documentation>
an identifier for a concept in a data model that
the data in this table represent.
</xs:documentation>
<xs:documentation>
The format defined in the VOTable standard is highly
recommended.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="column" type="vs:TableParam">
<xs:annotation>
<xs:documentation>
a description of a table column.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="foreignKey" type="vs:ForeignKey">
<xs:annotation>
<xs:documentation>
a description of a foreign keys, one or more columns
from the current table that can be used to join with
another table.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
<xs:attribute name="type" type="xs:string">
<xs:annotation>
<xs:documentation>
a name for the role this table plays. Recognized
values include "output", indicating this table is output
from a query; "base_table", indicating a table
whose records represent the main subjects of its
schema; and "view", indicating that the table represents
a useful combination or subset of other tables. Other
values are allowed.
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:anyAttribute namespace="##other"/>
</xs:complexType>
<xs:complexType name="BaseParam">
<xs:annotation>
<xs:documentation>
a description of a parameter that places no restriction on
the parameter's data type.
</xs:documentation>
<xs:documentation>
As the parameter's data type is usually important, schemas
normally employ a sub-class of this type (e.g. Param),
rather than this type directly.
</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element minOccurs="0" name="name" type="xs:token">
<xs:annotation>
<xs:documentation>
the name of the column
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="description" type="xs:token">
<xs:annotation>
<xs:documentation>
a free-text description of the column's contents
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="unit" type="xs:token">
<xs:annotation>
<xs:documentation>
the unit associated with all values in the column
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="ucd" type="xs:token">
<xs:annotation>
<xs:documentation>
the name of a unified content descriptor that
describes the scientific content of the parameter.
</xs:documentation>
<xs:documentation>
There are no requirements for compliance with any
particular UCD standard. The format of the UCD can
be used to distinguish between UCD1, UCD1+, and
SIA-UCD. See
http://www.ivoa.net/Documents/latest/UCDlist.html
for the latest IVOA standard set.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="utype" type="xs:token">
<xs:annotation>
<xs:documentation>
an identifier for a concept in a data model that
the data in this schema represent.
</xs:documentation>
<xs:documentation>
The format defined in the VOTable standard is highly
recommended.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
<xs:anyAttribute namespace="##other"/>
</xs:complexType>
<xs:complexType name="TableParam">
<xs:annotation>
<xs:documentation>
a description of a table parameter having a fixed data type.
</xs:documentation>
<xs:documentation>
The allowed data type names match those supported by VOTable.
</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="vs:BaseParam">
<xs:sequence>
<xs:element minOccurs="0" name="dataType" type="vs:TableDataType">
<xs:annotation>
<xs:documentation>
a type of data contained in the column
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="0" name="flag" type="xs:token">
<xs:annotation>
<xs:documentation>
a keyword representing traits of the column.
Recognized values include "indexed", "primary", and
"nullable".
</xs:documentation>
<xs:documentation>
See the specification document for definitions
of recognized keywords.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
<xs:attribute name="std" type="xs:boolean">
<xs:annotation>
<xs:documentation>
If true, the meaning and use of this parameter is
reserved and defined by a standard model. If false,
it represents a database-specific parameter
that effectively extends beyond the standard. If
not provided, then the value is unknown.
</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="InputParam">
<xs:annotation>
<xs:documentation>
a description of a service or function parameter having a
fixed data type.
</xs:documentation>
<xs:documentation>
The allowed data type names do not imply a size or precise
format. This type is intended to be sufficient for describing
an input parameter to a simple REST service or a function
written in a weakly-typed (e.g., scripting) language.
</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="vs:BaseParam">
<xs:sequence>
<xs:element minOccurs="0" name="dataType" type="vs:SimpleDataType">
<xs:annotation>
<xs:documentation>
a type of data contained in the column
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
<xs:attribute default="optional" name="use" type="vs:ParamUse">
<xs:annotation>
<xs:documentation>
An indication of whether this parameter is
required to be provided for the application
or service to work properly.
</xs:documentation>
<xs:documentation>
Allowed values are "required" and "optional".
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute default="true" name="std" type="xs:boolean">
<xs:annotation>
<xs:documentation>
If true, the meaning and behavior of this parameter is
reserved and defined by a standard interface. If
false, it represents an implementation-specific
parameter that effectively extends the behavior of the
service or application.
</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:simpleType name="ParamUse">
<xs:restriction base="xs:string">
<xs:enumeration value="required">
<xs:annotation>
<xs:documentation>
the parameter is required for the application or
service to work properly.
</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="optional">
<xs:annotation>
<xs:documentation>
the parameter is optional but supported by the application or
service.
</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="ignored">
<xs:annotation>
<xs:documentation>
the parameter is not supported and thus is ignored by the
application or service.
</xs:documentation>
</xs:annotation>
</xs:enumeration>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="DataType">
<xs:annotation>
<xs:documentation>
a type (in the computer language sense) associated with a
parameter with an arbitrary name
</xs:documentation>
<xs:documentation>
This XML type is used as a parent for defining data types
with a restricted set of names.
</xs:documentation>
</xs:annotation>
<xs:simpleContent>
<xs:extension base="xs:token">
<xs:attribute default="1" name="arraysize" type="vs:ArrayShape">
<xs:annotation>
<xs:documentation>
the shape of the array that constitutes the value
</xs:documentation>
<xs:documentation>
the default is "1"; i.e. the value is a scalar.
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute default=" " name="delim" type="xs:string">
<xs:annotation>
<xs:documentation>
the string that is used to delimit elements of an array
value when arraysize is not "1".
</xs:documentation>
<xs:documentation>
Unless specifically disallowed by the context,
applications should allow optional spaces to
appear in an actual data value before and after
the delimiter (e.g. "1, 5" when delim=",").
</xs:documentation>
<xs:documentation>
the default is " "; i.e. the values are delimited
by spaces.
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="extendedType" type="xs:string">
<xs:annotation>
<xs:documentation>
The data value represented by this type can be
interpreted as of a custom type identified by
the value of this attribute.
</xs:documentation>
<xs:documentation>
If an application does not recognize this
extendedType, it should attempt to handle value
assuming the type given by the element's value.
string is a recommended default type.
</xs:documentation>
<xs:documentation>
This element may make use of the extendedSchema
attribute and/or any arbitrary (qualified)
attribute to refine the identification of the
type.
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="extendedSchema" type="xs:anyURI">
<xs:annotation>
<xs:documentation>
An identifier for the schema that the value given
by the extended attribute is drawn from.
</xs:documentation>
<xs:documentation>
This attribute is normally ignored if the
extendedType attribute is not present.
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:anyAttribute namespace="##other"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<!--
- this definition is taken from the VOTable arrayDEF type
-->
<xs:simpleType name="ArrayShape">
<xs:annotation>
<xs:documentation>
An expression of a the shape of a multi-dimensional array
of the form LxNxM... where each value between gives the
integer length of the array along a dimension. An
asterisk (*) as the last dimension of the shape indicates
that the length of the last axis is variable or
undetermined.
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:token">
<xs:pattern value="([0-9]+x)*[0-9]*[*]?"/>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="SimpleDataType">
<xs:annotation>
<xs:documentation>
a data type restricted to a small set of names which is
imprecise as to the format of the individual values.
</xs:documentation>
<xs:documentation>
This set is intended for describing simple input parameters to
a service or function.
</xs:documentation>
</xs:annotation>
<xs:simpleContent>
<xs:restriction base="vs:DataType">
<xs:enumeration value="integer"/>
<xs:enumeration value="real"/>
<xs:enumeration value="complex"/>
<xs:enumeration value="boolean"/>
<xs:enumeration value="char"/>
<xs:enumeration value="string"/>
<xs:attribute default="1" name="arraysize" type="vs:ArrayShape"/>
<xs:attribute default=" " name="delim" type="xs:string"/>
<xs:attribute name="extendedType" type="xs:string"/>
<xs:attribute name="extendedSchema" type="xs:anyURI"/>
<xs:anyAttribute namespace="##other"/>
</xs:restriction>
</xs:simpleContent>
</xs:complexType>
<xs:complexType abstract="true" name="TableDataType">
<xs:annotation>
<xs:documentation>
an abstract parent for a class of data types that can be
used to specify the data type of a table column.
</xs:documentation>
</xs:annotation>
<xs:simpleContent>
<xs:extension base="vs:DataType"/>
</xs:simpleContent>
</xs:complexType>
<xs:complexType name="VOTableType">
<xs:annotation>
<xs:documentation>
a data type supported explicitly by the VOTable format
</xs:documentation>
</xs:annotation>
<xs:simpleContent>
<xs:restriction base="vs:TableDataType">
<xs:enumeration value="boolean"/>
<xs:enumeration value="bit"/>
<xs:enumeration value="unsignedByte"/>
<xs:enumeration value="short"/>
<xs:enumeration value="int"/>
<xs:enumeration value="long"/>
<xs:enumeration value="char"/>
<xs:enumeration value="unicodeChar"/>
<xs:enumeration value="float"/>
<xs:enumeration value="double"/>
<xs:enumeration value="floatComplex"/>
<xs:enumeration value="doubleComplex"/>
<xs:attribute default="1" name="arraysize" type="vs:ArrayShape"/>
<xs:attribute default=" " name="delim" type="xs:string"/>
<xs:attribute name="extendedType" type="xs:string"/>
<xs:attribute name="extendedSchema" type="xs:anyURI"/>
<xs:anyAttribute namespace="##other"/>
</xs:restriction>
</xs:simpleContent>
</xs:complexType>
<xs:complexType abstract="true" name="TAPDataType">
<xs:annotation>
<xs:documentation>
an abstract parent for the specific data types supported
by the Table Access Protocol.
</xs:documentation>
</xs:annotation>
<xs:simpleContent>
<xs:extension base="vs:TableDataType">
<xs:attribute name="size" type="xs:positiveInteger">
<xs:annotation>
<xs:documentation>
the length of the fixed-length value
</xs:documentation>
<xs:documentation>
This corresponds to the size Column attribute in
the TAP_SCHEMA and can be used with data types
that are defined with a length (CHAR, BINARY).
</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:complexType name="TAPType">
<xs:annotation>
<xs:documentation>
a data type supported explicitly by the Table Access
Protocol (v1.0).
</xs:documentation>
</xs:annotation>
<xs:simpleContent>
<xs:restriction base="vs:TAPDataType">
<xs:enumeration value="BOOLEAN"/>
<xs:enumeration value="SMALLINT"/>
<xs:enumeration value="INTEGER"/>
<xs:enumeration value="BIGINT"/>
<xs:enumeration value="REAL"/>
<xs:enumeration value="DOUBLE"/>
<xs:enumeration value="TIMESTAMP"/>
<xs:enumeration value="CHAR"/>
<xs:enumeration value="VARCHAR"/>
<xs:enumeration value="BINARY"/>
<xs:enumeration value="VARBINARY"/>
<xs:enumeration value="POINT"/>
<xs:enumeration value="REGION"/>
<xs:enumeration value="CLOB"/>
<xs:enumeration value="BLOB"/>
<xs:attribute default="1" name="arraysize" type="vs:ArrayShape"/>
<xs:attribute default=" " name="delim" type="xs:string"/>
<xs:attribute name="extendedType" type="xs:string"/>
<xs:attribute name="extendedSchema" type="xs:anyURI"/>
<xs:attribute name="size" type="xs:positiveInteger"/>
<xs:anyAttribute namespace="##other"/>
</xs:restriction>
</xs:simpleContent>
</xs:complexType>
<xs:complexType name="StandardSTC">
<xs:annotation>
<xs:documentation>
a description of standard space-time coordinate systems,
positions, and regions.
</xs:documentation>
<xs:documentation>
This resource provides a mechanism for registering standard
coordinate systems which other resources may reference as
part of a coverage descripiton. In particular, coverage
descriptions will refer to components of the STC
descriptions in this resource via an IVOA identifier. It
is intended that an application consuming such coverage
descriptions be able to semantically interpret the
identifier without resolving it. For this reason, once a
standard STC description is registered with this resource
type, updating the description is strongly discouraged.
</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="vr:Resource">
<xs:sequence>
<xs:element maxOccurs="unbounded" minOccurs="1" name="stcDefinitions" type="stc:stcDescriptionType">
<xs:annotation>
<xs:documentation>
An STC description of coordinate systems,
positions, and/or regions
</xs:documentation>
<xs:documentation>
Each system, position, and region description
should have a an XML ID assigned to it.
</xs:documentation>
<xs:documentation>
Because the STC schema sets
elementFormDefault="qualified", it is
recommended that this element specify the STC
default namespace via an xmlns namespace.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="ForeignKey">
<xs:annotation>
<xs:documentation>
A description of the mapping a foreign key--a set of
columns from one table--to columns in another table.
</xs:documentation>
<xs:documentation>
This definition that the foreign key is being described
within the context of the table containing the key.
</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="targetTable" type="xs:token">
<xs:annotation>
<xs:documentation>
the fully-qualified name (including catalog and schema, as
applicable) of the table that can be joined with the
table containing this foreign key.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element maxOccurs="unbounded" minOccurs="1" name="fkColumn" type="vs:FKColumn">
<xs:annotation>
<xs:documentation>
a pair of column names, one from this table and one
from the target table that should be used to join the
tables in a query.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="description" type="xs:token">
<xs:annotation>
<xs:documentation>
a free-text description of what this key points to
and what the relationship means.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element minOccurs="0" name="utype" type="xs:token">
<xs:annotation>
<xs:documentation>
an identifier for a concept in a data model that
the association enabled by this key represents.
</xs:documentation>
<xs:documentation>
The format defined in the VOTable standard is highly
recommended.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:complexType name="FKColumn">
<xs:annotation>
<xs:documentation>
A pair of columns that are used to join two tables.
</xs:documentation>
<xs:documentation>
To do an inner join of data from the two tables, a query should
include a constraint that sets the value from the first column equal
to the value in the second column.
</xs:documentation>
<xs:documentation>
This type assumes that it is used in the context of
implied source (i.e., current) and target tables, as in
the ForeignKey type's fkColumn.
</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="fromColumn" type="xs:token">
<xs:annotation>
<xs:documentation>
The unqualified name of the column from the current table.
</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="targetColumn" type="xs:token">
<xs:annotation>
<xs:documentation>
The unqualified name of the column from the target table.
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:schema>

This XML schema documentation has been generated with DocFlex/XML RE 1.8.0 using DocFlex/XML XSDDoc 2.2.0 template set.
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