SYSTEM_TYPEINFO_NUM_PREC_RADIX=For numeric types, this column contains the value 10 to indicate that COLUMN_SIZE specifies a number of decimal digits.  Otherwise, this column is NULL.SYSTEM_TYPEINFO_TYPE_SUB=the variant tag for this variation of the data type.  1 = standard, 2 = identity, 4 = ignore case# SYSTEM_UDTSSYSTEM_UDTS_TYPE_CAT=type's catalogSYSTEM_UDTS_TYPE_SCHEM=type's schemaSYSTEM_UDTS_TYPE_NAME=type's DBMS nameSYSTEM_UDTS_CLASS_NAME=type's Java class nameSYSTEM_UDTS_DATA_TYPE=type value defined in DITypes, from one of { "JAVA_OBJECT" | "STRUCT" | "DISTINCT" }SYSTEM_UDTS_BASE_TYPE=type code of the source type of a DISTINCT type or the type that implements the user-generated reference type of the SELF_REFERENCING_COLUMN of a structured type as defined in DITypes (null if DATA_TYPE is not DISTINCT or not STRUCT with REFERENCE_GENERATION = USER_DEFINED)SYSTEM_UDTS_REMARKS=explanatory comment on the user defined type# SYSTEM_UDTATTRIBUTESSYSTEM_UDTATTRIBUTES_TYPE_CAT=type catalogSYSTEM_UDTATTRIBUTES_TYPE_SCHEM=type schemaSYSTEM_UDTATTRIBUTES_TYPE_NAME=type nameSYSTEM_UDTATTRIBUTES_ATTR_NAME=attribute nameSYSTEM_UDTATTRIBUTES_DATA_TYPE=attribute type SQL type from DITypesSYSTEM_UDTATTRIBUTES_ATTR_TYPE_NAME=Data source dependent type name. For a UDT, the type name is fully qualified. For a REF, the type name is fully qualified and represents the target type of the reference type.SYSTEM_UDTATTRIBUTES_ATTR_SIZE=column size. For char or date types this is the maximum number of characters; for numeric or decimal types this is precision.SYSTEM_UDTATTRIBUTES_DECIMAL_DIGITS=the number of fractional digits (scale) of number typeSYSTEM_UDTATTRIBUTES_NUM_PREC_RADIX=Radix of number typeSYSTEM_UDTATTRIBUTES_NULLABLE=whether NULL is allowedSYSTEM_UDTATTRIBUTES_REMARKS=comment describing attributeSYSTEM_UDTATTRIBUTES_ATTR_DEF=default attribute valueSYSTEM_UDTATTRIBUTES_SQL_DATA_TYPE=The value of the SQL data type as it would appear in the SQL CLI SQL_DESC_TYPE field of the SQLDASYSTEM_UDTATTRIBUTES_SQL_DATETIME_SUB=When the value of SQL_DATA_TYPE is SQL_DATETIME or SQL_INTERVAL, this column contains the datetime/interval subcode.  For data types other than datetime and interval, this column is NULL.SYSTEM_UDTATTRIBUTES_CHAR_OCTET_LENGTH=for char types the maximum number of bytes in the columnSYSTEM_UDTATTRIBUTES_ORDINAL_POSITION=index of column in table (starting at 1)SYSTEM_UDTATTRIBUTES_IS_NULLABLE="NO" means column definitely does not allow NULL values; "YES" means the column might allow NULL values. An empty string means unknown.SYSTEM_UDTATTRIBUTES_SCOPE_CATALOG=catalog of table that is the scope of a reference attribute (NULL if DATA_TYPE isn't REF)SYSTEM_UDTATTRIBUTES_SCOPE_SCHEMA=schema of table that is the scope of a reference attribute (NULL if DATA_TYPE isn't REF)SYSTEM_UDTATTRIBUTES_SCOPE_TABLE=table name that is the scope of a reference attribute (NULL if the DATA_TYPE isn't REF)SYSTEM_UDTATTRIBUTES_SOURCE_DATA_TYPE=source type of a distinct type or user-generated Ref type, SQL type from DITypes (NULL if DATA_TYPE isn't DISTINCT or user-generated REF)# SYSTEM_USERSSYSTEM_USERS_USER=user nameSYSTEM_USERS_ADMIN=has the administrative privilege?# SYSTEM_VERSIONCOLUMNSSYSTEM_VERSIONCOLUMNS_TABLE_CAT=table catalogSYSTEM_VERSIONCOLUMNS_TABLE_SCHEM=table schemaSYSTEM_VERSIONCOLUMNS_TABLE_NAME=simple table nameSYSTEM_VERSIONCOLUMNS_SCOPE=not usedSYSTEM_VERSIONCOLUMNS_COLUMN_NAME=column nameSYSTEM_VERSIONCOLUMNS_DATA_TYPE=SQL data type from DITypesSYSTEM_VERSIONCOLUMNS_TYPE_NAME=Data source dependent type nameSYSTEM_VERSIONCOLUMNS_COLUMN_SIZE=precisionSYSTEM_VERSIONCOLUMNS_BUFFER_LENGTH=length of column value in bytesSYSTEM_VERSIONCOLUMNS_DECIMAL_DIGITS=scaleSYSTEM_VERSIONCOLUMNS_PSEUDO_COLUMN=is this a pseudo column like an Oracle ROWID: { Unknown | Not Pseudo | Pseudo }?# SYSTEM_VIEWSSYSTEM_VIEWS_TABLE_CATALOG=name of catalog in which view is definedSYSTEM_VIEWS_TABLE_SCHEMA=unqualified name of schema in which view is definedSYSTEM_VIEWS_TABLE_NAME=simple name of viewSYSTEM_VIEWS_VIEW_DEFINITION=the character representation of the query expression contained in the corresponding view descriptor.SYSTEM_VIEWS_CHECK_OPTION={"CASCADED" | "LOCAL" | "NONE"}SYSTEM_VIEWS_IS_UPDATABLE={"YES" | "NO"}SYSTEM_VIEWS_VALID={TRUE | FALSE}# Since 1.7.2 RC1# SYSTEM_CHECK_COLUMN_USAGESYSTEM_CHECK_COLUMN_USAGE_CONSTRAINT_CATALOG=constraint catalog nameSYSTEM_CHECK_COLUMN_USAGE_CONSTRAINT_SCHEMA=constraint schema nameSYSTEM_CHECK_COLUMN_USAGE_CONSTRAINT_NAME=constraint identifierSYSTEM_CHECK_COLUMN_USAGE_TABLE_CATALOG=table catalog nameSYSTEM_CHECK_COLUMN_USAGE_TABLE_SCHEMA= table schema nameSYSTEM_CHECK_COLUMN_USAGE_TABLE_NAME=table nameSYSTEM_CHECK_COLUMN_USAGE_COLUMN_NAME=name of column referenced explicitly or implicitly as contained in the <search condition> of the constraint being described.# SYSTEM_CHECK_CONSTRAINTSSYSTEM_CHECK_CONSTRAINTS_CONSTRAINT_CATALOG=constraint catalog nameSYSTEM_CHECK_CONSTRAINTS_CONSTRAINT_SCHEMA=constraint schema nameSYSTEM_CHECK_CONSTRAINTS_CONSTRAINT_NAME=constraint identifierSYSTEM_CHECK_CONSTRAINTS_CHECK_CLAUSE=the character representation of the <search condition> contained in the <check constraint definition>, <domain constraint definition>, or <assertion definition> that defined the check constraint being described, or NULL if it cannot be described without truncation# SYSTEM_CHECK_ROUTINE_USAGESYSTEM_CHECK_ROUTINE_USAGE_CONSTRAINT_CATALOG=constraint catalog nameSYSTEM_CHECK_ROUTINE_USAGE_CONSTRAINT_SCHEMA=constraint schema nameSYSTEM_CHECK_ROUTINE_USAGE_CONSTRAINT_NAME=constraint identifierSYSTEM_CHECK_ROUTINE_USAGE_SPECIFIC_CATALOG=catalog name of specific name of routineSYSTEM_CHECK_ROUTINE_USAGE_SPECIFIC_SCHEMA=schema name of specific name of routineSYSTEM_CHECK_ROUTINE_USAGE_SPECIFIC_NAME=specific name of SQL-invoked routine identified as the subject routine of either a <routine invocation>, a <method reference>, a <method invocation>, or a <static method invocation> contained in the <assertion definition> or in the <check constraint definition> contained in either a <domain constraint> or a <table constraint definition># SYSTEM_CHECK_TABLE_USAGESYSTEM_CHECK_TABLE_USAGE_CONSTRAINT_CATALOG=constraint catalog nameSYSTEM_CHECK_TABLE_USAGE_CONSTRAINT_SCHEMA=constraint schema nameSYSTEM_CHECK_TABLE_USAGE_CONSTRAINT_NAME=constraint identifierSYSTEM_CHECK_TABLE_USAGE_TABLE_CATALOG=table catalog nameSYSTEM_CHECK_TABLE_USAGE_TABLE_SCHEMA=table schema nameSYSTEM_CHECK_TABLE_USAGE_TABLE_NAME=name of a table identified by a <table name> simply contained in a <table reference> contained in the lt;search condition> of the constraint being described.# SYSTEM_SEQUENCESSYSTEM_SEQUENCES_SEQUENCE_CATALOG=sequence catalog nameSYSTEM_SEQUENCES_SEQUENCE_SCHEMA=sequence schema nameSYSTEM_SEQUENCES_SEQUENCE_NAME=sequence identifierSYSTEM_SEQUENCES_DTD_IDENTIFIER=implementation dependent data type descriptor identifierSYSTEM_SEQUENCES_MAXIMUM_VALUE=sequence maximum valueSYSTEM_SEQUENCES_MINIMUM_VALUE=sequence minimum valueSYSTEM_SEQUENCES_INCREMENT=sequence incrementSYSTEM_SEQUENCES_CYCLE_OPTION=sequence cycle option ('YES' | 'NO')SYSTEM_SEQUENCES_START_WITH=sequence start with value# SYSTEM_TABLE_CONSTRAINTSSYSTEM_TABLE_CONSTRAINTS_CONSTRAINT_CATALOG=constraint catalog nameSYSTEM_TABLE_CONSTRAINTS_CONSTRAINT_SCHEMA=constraint schema nameSYSTEM_TABLE_CONSTRAINTS_CONSTRAINT_NAME=constraint identifierSYSTEM_TABLE_CONSTRAINTS_CONSTRAINT_TYPE=('UNIQUE' | 'PRIMARY KEY' | 'FOREIGN KEY' | 'CHECK')SYSTEM_TABLE_CONSTRAINTS_TABLE_CATALOG=table catalog nameSYSTEM_TABLE_CONSTRAINTS_TABLE_SCHEMA=table schema nameSYSTEM_TABLE_CONSTRAINTS_TABLE_NAME=table identifierSYSTEM_TABLE_CONSTRAINTS_IS_DEFERRABLE=('YES' | 'NO')SYSTEM_TABLE_CONSTRAINTS_INITIALLY_DEFERRED=('YES' | 'NO')# SYSTEM_USAGE_PRIVILEGESSYSTEM_USAGE_PRIVILEGES_GRANTOR=<authorization identifier> of the user or role who granted usage privileges on the objectSYSTEM_USAGE_PRIVILEGES_GRANTEE=<authorization identifier> of some user or role, or ?PUBLIC? to indicate all users, to whom the usage privilege being described is grantedSYSTEM_USAGE_PRIVILEGES_OBJECT_CATALOG=object catalog nameSYSTEM_USAGE_PRIVILEGES_OBJECT_SCHEMA=object catalog schemaSYSTEM_USAGE_PRIVILEGES_OBJECT_NAME=identifier of the object to which the privilege appliesSYSTEM_USAGE_PRIVILEGES_OBJECT_TYPE=(DOMAIN' | 'CHARACTER SET' | 'COLLATION' | 'TRANSLATION' | 'SEQUENCE')SYSTEM_USAGE_PRIVILEGES_IS_GRANTABLE=('YES' | 'NO')# SYSTEM_VIEW_COLUMN_USAGESYSTEM_VIEW_COLUMN_USAGE_VIEW_CATALOG=view catalog nameSYSTEM_VIEW_COLUMN_USAGE_VIEW_SCHEMA=view schema nameSYSTEM_VIEW_COLUMN_USAGE_VIEW_NAME=view identifierSYSTEM_VIEW_COLUMN_USAGE_TABLE_CATALOG=table catalog nameSYSTEM_VIEW_COLUMN_USAGE_TABLE_SCHEMA=table schema nameSYSTEM_VIEW_COLUMN_USAGE_TABLE_NAME=table identifierSYSTEM_VIEW_COLUMN_USAGE_COLUMN_NAME=column of table that is explicitly or implicitly referenced in the <query expression> of the view being described.# SYSTEM_VIEW_ROUTINE_USAGESYSTEM_VIEW_ROUTINE_USAGE_TABLE_CATALOG=view catalog nameSYSTEM_VIEW_ROUTINE_USAGE_TABLE_SCHEMA=view schema nameSYSTEM_VIEW_ROUTINE_USAGE_TABLE_NAME=view identifierSYSTEM_VIEW_ROUTINE_USAGE_SPECIFIC_CATALOG=catalog name of specific name of routineSYSTEM_VIEW_ROUTINE_USAGE_SPECIFIC_SCHEMA=schema name of specific name of routineSYSTEM_VIEW_ROUTINE_USAGE_SPECIFIC_NAME=specific name of SQL-invoked subject routine of either a <routine invocation>, a <method reference>, a <method invocation>, or a <static method invocation> contained in the <view definition>SYSTEM_VIEW_TABLE_USAGE_VIEW_CATALOG=view catalog nameSYSTEM_VIEW_TABLE_USAGE_VIEW_SCHEMA=view schema nameSYSTEM_VIEW_TABLE_USAGE_VIEW_NAME=view identifierSYSTEM_VIEW_TABLE_USAGE_TABLE_CATALOG=table catalog nameSYSTEM_VIEW_TABLE_USAGE_TABLE_SCHEMA=table schema nameSYSTEM_VIEW_TABLE_USAGE_TABLE_NAME=table identified by a <table name> simply contained in a <table reference> that is contained in the <query expression> of the view being described.# Since 1.8.0# SYSTEM_AUTHORIZATIONSSYSTEM_AUTHORIZATIONS_AUTHORIZATION_NAME=a <role name> or <user identifier>SYSTEM_AUTHORIZATIONS_AUTHORIZATION_TYPE=('USER' | 'ROLE') whether the AUTHORIZATION_NAME is a known <user identifier> or is a <role name> defined by a <role definition>.# SYSTEM_COLLATIONSSYSTEM_COLLATIONS_COLLATION_CATALOG=catalog name of the collation being describedSYSTEM_COLLATIONS_COLLATION_SCHEMA=unqualified schema name of the collation being describedSYSTEM_COLLATIONS_COLLATION_NAME=qualified identifier of the collation being describedSYSTEM_COLLATIONS_PAD_ATTRIBUTE=('NO PAD' | 'PAD SPACE') whether the collation being described has the NO PAD or PAD SPACE characteristicSYSTEM_COLLATIONS_COLLATION_TYPE=NULL (deprecated)SYSTEM_COLLATIONS_COLLATION_DEFINITION=NULL (deprecated)SYSTEM_COLLATIONS_COLLATION_DICTIONARY=NULL (deprecated)SYSTEM_COLLATIONS_CHARACTER_REPERTOIRE_NAME=the name of the charater repertoire to which the collation being described is applicable.# SYSTEM_ROLE_AUTHORIZATION_DESCRIPTORSSYSTEM_ROLE_AUTHORIZATION_DESCRIPTORS_ROLE_NAME=the <role name> of some <role granted> by the <grant role statement> or the <role name> of a <role definition>.SYSTEM_ROLE_AUTHORIZATION_DESCRIPTORS_GRANTEE=an <authorization identifier>, possibly PUBLIC, or <role name> specified as a <grantee> contained in a <grant role statement>, or the <authorization identifier> of the current SQLsession when the <role definition> is executed.SYSTEM_ROLE_AUTHORIZATION_DESCRIPTORS_GRANTOR=the <authorization identifier> of the user or role who granted the role identified by ROLE_NAME to the user or role identified by the value of GRANTEE.# SYSTEM_SCHEMATASYSTEM_SCHEMATA_CATALOG_NAME=the name of the catalog of the described schemaSYSTEM_SCHEMATA_SCHEMA_NAME=the unqualified schema name of the described schemaSYSTEM_SCHEMATA_SCHEMA_OWNER=the authorization identifier that owns the schema.SYSTEM_SCHEMATA_DEFAULT_CHARACTER_SET_CATALOG=the catalog name of the default character set for columns and domains in the schema.SYSTEM_SCHEMATA_DEFAULT_CHARACTER_SET_SCHEMA=the unqualified schema name of the default character set for columns and domains in the schema.SYSTEM_SCHEMATA_DEFAULT_CHARACTER_SET_NAME=the qualified identifier of the default character set for columns and domains in the schemata.SYSTEM_SCHEMATA_SQL_PATH=the character representation of the schema's <schema path specification>, or null if it cannot be represented without truncation