tap_schema tap_schema.columns arraysize lists the size of variable-length columns in the tableset int column_index recommended sort order when listing columns of a table int column_name the column name char datatype lists the ADQL datatype of columns in the tableset char description describes the columns in the tableset char indexed an indexed column; 1 means 1, 0 means 0 int principal a principal column; 1 means 1, 0 means 0 int "size" deprecated: use arraysize int std a standard column; 1 means 1, 0 means 0 int table_name the table this column belongs to char ucd lists the UCDs of columns in the tableset char unit lists the unit used for column values in the tableset char utype lists the utypes of columns in the tableset char xtype a DALI or custom extended type annotation char tap_schema.tables table_name table_name tap_schema.key_columns from_column column in the from_table char key_id key to join to tap_schema.keys char target_column column in the target_table char tap_schema.keys key_id key_id tap_schema.columns from_column column_name tap_schema.columns target_column column_name tap_schema.keys description describes keys in the tableset char from_table the table with the foreign key char key_id unique key to join to tap_schema.key_columns char target_table the table with the primary key char utype lists the utype of keys in the tableset char tap_schema.tables from_table table_name tap_schema.tables target_table table_name tap_schema.obscore access_estsize Estimated size of dataset in kbytes long access_format File content format char access_url URL used to access (download) data char aggregate_bandwidth Aggregate bandwidth across all spectral windows in this product double bandwidths Bandwidths of the spectral windows in this product, separated by commas, in the same order as the rest of the spectral window fields char calib_level Calibration level {0, 1, 2, 3} int center_frequencies Center frequencies of the spectral windows in this product, separated by commas, in the same order as the rest of the spectral window fields char configuration Array configuration used char dataproduct_type Logical data product type (image etc.) char em_max Stop in spectral coordinates double em_min Start in spectral coordinates double em_res_power Spectral resolving power double em_xel double facility_name Name of the facility used for observation char freq_max frequency high end double freq_min frequency low end double instrument_name Name of the instrument for this obs. char max_uv_dist Maximum UV Distance double num_antennas Number of antennas used short nums_channels Number of channels of each spectral window in this product, separated by commas, in the same order as the rest of the spectral window fields char obs_collection Name of the data collection char obs_id Observation ID char obs_publisher_did Dataset identifier given by the publisher char o_ucd UCD of observable (eg. phot. flux density) char pol_states List of polarization states or NULL char project_code The project code for this entry. char proprietary_status The proprietary status of this entry char qa_notes QA notes associated with this entry char scan_num The scan number for this entry. int s_dec Central declination, ICRS double s_fov Diameter (bounds) of the covered region double spectral_resolutions Spectral Resolutions of the spectral windows in this product, separated by commas, in the same order as the rest of the spectral window fields char spw_names Names of the spectral windows in this product, separated by commas, in the same order as the rest of the spectral window fields char s_ra Central right ascension, ICRS double s_region Region covered as specified in STC or ADQL char s_resolution Spatial resolution of data as FWHM double target_name Astronomical object observed, if any char t_exptime Total exposure time double t_max Stop time in MJD double t_min Start time in MJD double t_resolution Temporal resolution in FWHM double tap_schema.schemas description describes schemas in the tableset char schema_index recommended sort order when listing schemas int schema_name schema name for reference to tap_schema.schemas char utype lists the utypes of schemas in the tableset char tap_schema.tables description describes tables in the tableset char schema_name the schema this table belongs to char table_index recommended sort order when listing tables int table_name the fully qualified table name char table_type one of: table view char utype lists the utype of tables in the tableset char tap_schema.schemas schema_name schema_name