Table information for 'rr.table_column'

General

Table Description: Metadata on columns of a resource's tables.

This table is available for ADQL queries and through the TAP endpoint.

Resource Description:

Tables containing the information in the IVOA Registry. To query these tables, use our TAP service.

For more information and example queries, see the RegTAP specification.

For a list of all services and tables belonging to this table's resource, see Information on resource 'GAVO RegTAP Service'

Resource Reference URL: Resource info

Citing this table

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:rr_table_column,
  year=2012,
  title={{GAVO} {RegTAP} Service},
  author={{GAVO} Data Centre},
  url={https://dc.g-vo.org/tableinfo/rr.table_column},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

Columns

Sorted alphabetically. [Sort by DB column index]

NameTable Head DescriptionUnitUCD
arraysize Arraysize The shape of the array that constitutes the value, e.g., 4, *, 4*, 5x4, or 5x*, as specified by VOTable. N/A N/A
column_description Column_description A free-text description of the column's contents. N/A N/A
datatype Datatype The type of the data contained in the column. N/A N/A
delim Delim The string that is used to delimit elements of an array value when arraysize is not '1'. N/A N/A
extended_schema Extended_schema An identifier for the schema that the value given by the extended attribute is drawn from. N/A N/A
extended_type Extended_type A custom type for the values this column contains. N/A N/A
flag Flag Hash-separated keywords representing traits of the column. Recognized values include "indexed", "primary", and "nullable". N/A N/A
ivoid Ivoid The parent resource. N/A N/A
name Name The name of the column. N/A N/A
std Std If 1, the meaning and use of this column is reserved and defined by a standard model. If 0, it represents a database-specific column that effectively extends beyond the standard. N/A N/A
table_index Table_index Index of the table this column belongs to. N/A N/A
type_system Type_system The type system used, as a QName with a canonical prefix; this will ususally be one of vs:simpledatatype, vs:votabletype, and vs:taptype. N/A N/A
ucd Ucd A unified content descriptor that describes the scientific content of the column. N/A N/A
unit Unit The unit associated with all values in the column. N/A N/A
utype Utype An identifier for a role in a data model that the data in this column represents. N/A N/A

Columns that are parts of indices are marked like this.

Other

The following services may use the data contained in this table:

VOResource

VO nerds may sometimes need VOResource XML for this table.