schema_name java.lang.String 64 false false schema_name schema name for reference to TAP_SCHEMA.schemas utype java.lang.String 255 true lists the utypes of schemas in the tableset description java.lang.String 255 true describes schemas in the tableset schema_name java.lang.String 64 false false schema_name the schema this table belongs to table_name java.lang.String 128 false false table_name the fully qualified table name table_type 8 java.lang.String false table_type one of: table view utype java.lang.String 255 true lists the utype of tables in the tableset description java.lang.String 255 true describes tables in the tableset table_name true java.lang.String 128 false false table_name the table this column belongs to column_name true java.lang.String 64 false false column_name the column name datatype java.lang.String 64 false datatype lists the ADQL datatype of columns in the tableset size java.lang.Integer false size lists the size of variable-length columns in the tableset description java.lang.String 255 true describes the columns in the tableset utype java.lang.String 255 true lists the utypes of columns in the tableset unit java.lang.String 64 true lists the unit used for column values in the tableset ucd java.lang.String 64 true lists the UCDs of columns in the tableset indexed java.lang.Integer false false indexed 0 an indexed column; 1 means true, 0 means false principal java.lang.Integer true false 0 a principal column; 1 means true, 0 means false std java.lang.Integer true false 0 a standard column; 1 means true, 0 means false key_id java.lang.String 64 true unique key to join to TAP_SCHEMA.key_columns from_table java.lang.String 128 false from_table the table with the foreign key target_table java.lang.String 128 false target_table the table with the primary key description java.lang.String 255 true describes keys in the tableset utype java.lang.String 255 true lists the utype of keys in the tableset key_id java.lang.String 64 true key to join to TAP_SCHEMA.keys from_column java.lang.String 64 false from_column column in the from_table target_column java.lang.String 64 false target_column column in the target_table