C
Data Dictionary

The Oracle Transparent Gateway for Informix translates a query that refers to an Oracle database server data dictionary table into a query that retrieves the data from Informix system catalog tables. You perform queries on data dictionary tables over the database link in the same way you query data dictionary tables in the Oracle database server. The gateway data dictionary is similar to the Oracle database server data dictionary in appearance and use.

This appendix contains the following sections:

Data Dictionary Support

Informix System Catalog Tables

Informix data dictionary information is stored in the Informix database as Informix system catalog tables. All Informix system catalog tables have names prefixed with "sys". The Informix system catalog tables define the structure of a database. When you change data definitions, Informix reads and modifies the Informix system catalog tables to add information about the user tables.

Accessing the Gateway Data Dictionary

Accessing a gateway data dictionary table or view is identical to accessing a data dictionary in an Oracle database. You issue a SQL SELECT statement specifying a database link. The Oracle database server data dictionary view and column names are used to access the gateway data dictionary in an Oracle database. Synonyms of supported views are also acceptable. For example, the following statement queries the data dictionary table ALL_CATALOG to retrieve all table names in the Informix database:

SQL> SELECT * FROM "ALL_CATALOG"@IFMX;

When a data dictionary access query is issued, the gateway:

Maps the requested table, view, or synonym to one or more Informix system catalog table names. The gateway translates all data dictionary column names to their corresponding Informix column names within the query. If the mapping involves one Informix system catalog table, the gateway translates the requested table name to its corresponding Informix system catalog table name within the query. If the mapping involves multiple Informix system catalog tables, the gateway constructs a join in the query using the translated Informix system catalog table names.
Sends the translated query to Informix.
Might convert the retrieved Informix data to give it the appearance of the Oracle database server data dictionary table.
Passes the data dictionary information from the translated Informix system catalog table to the Oracle database server.

Note:
The values returned when querying the gateway data dictionary might not be the same as the ones returned by the Oracle SQL*Plus DESCRIBE command.

Direct Queries to Informix Tables

Queries issued directly to individual Informix system catalog tables are allowed but they return different results because the Informix system catalog table column names differ from those of the data dictionary view. Also, certain columns in an Informix system catalog table cannot be used in data dictionary processing.

Supported Views and Tables

The gateway supports the following views and tables:

ALL_CATALOG

ALL_COL_COMMENTS

ALL_COL_PRIVS

ALL_CONS_COLUMNS

ALL_CONSTRAINTS

ALL_IND_COLUMNS

ALL_INDEXES

ALL_OBJECTS

ALL_SYNONYMS

ALL_TAB_COLUMNS

ALL_TAB_COMMENTS

ALL_TAB_PRIVS

ALL_TABLES

ALL_USERS

ALL_VIEWS

COLUMN_PRIVILEGES

DBA_CATALOG

DBA_COL_COMMENTS

DBA_OBJECTS

DBA_TABLES

DBA_TAB_COLUMNS

DBA_TAB_COMMENTS

DICT_COLUMNS

DICTIONARY

DUAL

TABLE_PRIVILEGES

USER_CATALOG

USER_COL_COMMENTS

USER_COL_PRIVS

USER_CONS_COLUMNS

USER_CONSTRAINTS

USER_IND_COLUMNS

USER_INDEXES

USER_OBJECTS

USER_SYNONYMS

USER_TAB_COLUMNS

USER_TAB_COMMENTS

USER_TAB_PRIVS

USER_TABLES

USER_USERS

USER_VIEWS

No other Oracle database server data dictionary tables or views are supported. If you use a view not on the list, you receive the Oracle database server error code for no more rows available.

Queries through the gateway of any data dictionary table or view beginning with ALL_ can returns rows from the Informix database even when access privileges for those Informix objects have not been granted. When querying an Oracle database with the Oracle data dictionary, rows are returned only for those objects you are permitted to access.

Data Dictionary Mapping

The tables in this section list Oracle data dictionary view names and the equivalent Informix system catalog tables used. A plus sign (+) indicates that a join operation is involved.

Table C-1 Oracle Data Dictionary View Names and Informix Equivalents

View Name	Informix System Catalog Table Name
ALL_CATALOG	systables
ALL_COL_COMMENTS	systables +syscolumns
ALL_COL_PRIVS	systables + syscolumns + syscolauth
ALL_CONS_COLUMNS	systables + sysconstraints + syscolumns + sysindexes
ALL_CONSTRAINTS	systables + sysconstraints + sysreferences
ALL_IND_COLUMNS	systables + sysindexes + syscolumns
ALL_INDEXES	sysindexes + systables
ALL_OBJECTS	systables + sysindexes + sysprocedures + sysprocplan
ALL_SYNONYMS	systables + syssynonyms + syssyntable
ALL_TAB_COLUMNS	systables + syscolumns
ALL_TAB_COMMENTS	systables
ALL_TAB_PRIVS	systables + systabauth
ALL_TABLES	systables
ALL_USERS	sysusers
ALL_VIEWS	systables + sysviews
COLUMN_PRIVILEGES	systables + syscolauth + syscolumns
DBA_CATALOG	systables
DBA_COL_COMMENTS	systables + syscolumns
DBA_OBJECTS	systables + sysindexes + sysprocedures + sysprocplan
DBA_TABLES	systables
DBA_TAB_COLUMNS	systables + syscolumns
DBA_TAB_COMMENTS	systables
DICT_COLUMNS	systables + syscolumns
DICTIONARY	systables
DUAL	(Defined in the Gateway)
TABLE_PRIVILEGES	systabauth + systables
USER_CATALOG	systables
USER_COL_COMMENTS	systables + syscolumns
USER_COL_PRIVS	systables + syscolumns + syscolauth
USER_CONS_COLUMNS	systables + sysconstraints + syscolumns + sysindexes
USER_CONSTRAINTS	systables + sysconstraints + sysreferences
USER_IND_COLUMNS	systables + sysindexes + syscolumns
USER_INDEXES	systables + sysindexes
USER_OBJECTS	systables + sysindexes + sysprocedures + sysprocplan
USER_SYNONYMS	systables + syssynonyms + syssyntable
USER_TAB_COLUMNS	systables + syscolumns
USER_TAB_COMMENTS	systables
USER_TAB_PRIVS	systables + systabauth
USER_TABLES	systables
USER_USERS	sysusers
USER_VIEWS	systables + sysviews

Default Column Values

There is a minor difference between the gateway data dictionary and a typical Oracle database server data dictionary. The Oracle database server columns that are missing in an Informix system catalog table are filled with zeros, spaces, null values, not-applicable values (N.A.), or default values, depending on the column type.

Gateway Data Dictionary Descriptions

The gateway data dictionary tables and views provide the following information:

Name, data type, and width of each column
The contents of columns with fixed values

They are described here with information retrieved by an Oracle SQL*Plus DESCRIBE command. The values in the Null? column might differ from the Oracle database server data dictionary tables and views. Any default value is shown to the right of an item, but this is not information returned by DESCRIBE.

Table C-2 ALL_CATALOG

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
TABLE_TYPE	-	VARCHAR2(7)	"TABLE" or "VIEW" or "SYNONYM"

Table C-3 ALL_COL_COMMENTS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
COMMENTS	NOT NULL	CHAR(1)	" "

Table C-4 ALL_COL_PRIVS

Name	Null?	Type	Value
GRANTOR	-	VARCHAR2(32)	-
GRANTEE	-	VARCHAR2(32)	-
TABLE_SCHEMA	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
PRIVILEGE	-	VARCHAR2(10)	"SELECT" or "UPDATE" or "REFERENCES"
GRANTABLE	-	VARCHAR2(3)	"YES" or "NO"

Table C-5 ALL_CONS_COLUMNS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
CONSTRAINT_NAME	-	VARCHAR2(128)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
POSITION	NOT NULL	NUMBER(10)	0

Table C-6 ALL_CONSTRAINTS

Name	Null?	Type	Value
OWNER	NOT NULL	VARCHAR2(32)	-
CONSTRAINT_NAME	NOT NULL	VARCHAR2(128)	-
CONSTRAINT_TYPE	NOT NULL	VARCHAR2(1)	"R" or "P" or "U" or "C"
TABLE_NAME	NOT NULL	VARCHAR2(128)	-
SEARCH_CONDITION	NOT NULL	CHAR(1)	" "
R_OWNER	NOT NULL	CHAR(1)	" "
R_CONSTRAINT_NAME	NOT NULL	CHAR(1)	" "
DELETE_RULE	NOT NULL	CHAR(1)	" "
STATUS	NOT NULL	CHAR(1)	" "
DEFERRABLE	NOT NULL	CHAR(1)	" "
DEFERRED	NOT NULL	CHAR(1)	" "
VALIDATED	NOT NULL	CHAR(1)	" "
GENERATED	NOT NULL	CHAR(1)	" "
BAD	NOT NULL	CHAR(1)	" "
RELY	NOT NULL	CHAR(1)	" "
LAST_CHANGE	-	DATE	-

Table C-7 ALL_IND_COLUMNS

Name	Null?	Type	Value
INDEX_OWNER	-	VARCHAR2(32)	-
INDEX_NAME	-	VARCHAR2(128)	-
TABLE_OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
COLUMN_POSITION	NOT NULL	NUMBER(10)	0
COLUMN_LENGTH	NOT NULL	NUMBER(10)	0
DESCEND	NOT NULL	CHAR(1)	" "

Table C-8 ALL_INDEXES

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
INDEX_NAME	-	VARCHAR2(128)	-
INDEX_TYPE	-	VARCHAR2(1)	NULL
TABLE_OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
TABLE_TYPE	-	VARCHAR(5)	"TABLE"
UNIQUENESS	-	VARCHAR2(9)	"UNIQUE" or "NONUNIQUE"
COMPRESSION	-	VARCHAR2(1)	NULL
PREFIX_LENGTH	-	NUMBER	0
TABLESPACE_NAME	-	VARCHAR2(1)	NULL
INI_TRANS	-	NUMBER	0
MAX_TRANS	-	NUMBER	0
INITIAL_EXTENT	-	NUMBER	0
NEXT_EXTENT	-	NUMBER	0
MIN_EXTENTS	-	NUMBER	0
MAX_EXTENTS	-	NUMBER	0
PCT_INCREASE	-	NUMBER	0
PCT_THRESHOLD	-	NUMBER	0
INCLUDE_COLUMN	-	NUMBER	0
FREELISTS	-	NUMBER	0
FREELIST_GROUPS	-	NUMBER	0
PCT_FREE	-	NUMBER	0
LOGGING	-	VARCHAR2(1)	NULL
BLEVEL	-	NUMBER	0
LEAF_BLOCKS	-	NUMBER	0
DISTINCT_KEYS	-	NUMBER	0
AVG_LEAF_BLOCKS_PER_KEY	-	NUMBER	0
AVG_DATA_BLOCKS_PER_KEY	-	NUMBER	0
CLUSTERING_FACTOR	-	NUMBER	0
STATUS	-	VARCHAR2(1)	NULL
NUM_ROWS	-	NUMBER	0
SAMPLE_SIZE	-	NUMBER	0
LAST_ANALYZED	-	DATE	to_date( '01-01-1980', 'dd-mm-yyyy')
DEGREE	-	VARCHAR2(1)	NULL
INSTANCES	-	VARCHAR2(1)	NULL
PARTITIONED	-	VARCHAR2(1)	NULL
TEMPORARY	-	VARCHAR2(1)	NULL
GENERATED	-	VARCHAR2(1)	NULL
SECONDARY	-	VARCHAR2(1)	NULL
BUFFER_POOL	-	VARCHAR2(1)	NULL
USER_STATS	-	VARCHAR2(1)	NULL
DURATION	-	VARCHAR2(1)	NULL
PCT_DIRECT_ACCESS	-	NUMBER	0
ITYP_OWNER	-	VARCHAR2(1)	NULL
ITYP_NAME	-	VARCHAR2(1)	NULL
PARAMETERS	-	VARCHAR2(1)	NULL
GLOBAL_STATS	-	VARCHAR2(1)	NULL
DOMIDX_STATUS	-	VARCHAR2(1)	NULL
DOMIDX_OPSTATUS	-	VARCHAR2(1)	NULL
FUNCIDX_STATUS	-	VARCHAR2(1)	NULL

Table C-9 ALL_OBJECTS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
OBJECT_NAME	-	VARCHAR2(128)	-
SUBOBJECT_NAME	-	VARCHAR2(1)	NULL
OBJECT_ID	-	NUMBER	-
DATA_OBJECT_ID	-	NUMBER	0
OBJECT_TYPE	-	VARCHAR2(9)	"TABLE" or "VIEW" or "SYNONYM" or "INDEX" or "PROCEDURE"
CREATED	-	DATE	-
LAST_DDL_TIME	-	DATE	-
TIMESTAMP	-	VARCHAR2(1)	NULL
STATUS	-	VARCHAR2(1)	NULL
TEMPORARY	-	VARCHAR2(1)	NULL
GENERATED	-	VARCHAR2(1)	NULL
SECONDARY	-	VARCHAR2(1)	NULL

Table C-10 ALL_SYNONYMS

Name	Null?	Type	Value
OWNER	NOT NULL	VARCHAR2(32)	-
SYNONYM_NAME	NOT NULL	VARCHAR2(128)	-
TABLE_OWNER	NOT NULL	VARCHAR2(32)	-
TABLE_NAME	NOT NULL	VARCHAR2(128)	-
DB_LINK	-	CHAR(1)	NULL

Table C-11 ALL_TAB_COLUMNS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
DATA_TYPE	-	VARCHAR2(8)	-
DATA_TYPE_MOD	-	VARCHAR2(1)	NULL
DATA_TYPE_OWNER	-	VARCHAR2(1)	NULL
DATA_LENGTH	-	NUMBER	-
DATA_PRECISION	-	NUMBER	-
DATA_SCALE	-	NUMBER	-
NULLABLE	-	VARCHAR2(1)	"Y" or "N"
COLUMN_ID	-	NUMBER(5)	-
DEFAULT_LENGTH	-	NUMBER	0
DATA_DEFAULT	-	VARCHAR2(1)	NULL
NUM_DISTINCT	-	NUMBER	0
LOW_VALUE	-	NUMBER	0
HIGH_VALUE	-	NUMBER	0
DENSITY	-	NUMBER	0
NUM_NULLS	-	NUMBER	0
NUM_BUCKETS	-	NUMBER	0
LAST_ANALYZED	-	DATE	to_date( '01-01-1980', 'dd-mm-yyyy')
SAMPLE_SIZE	-	NUMBER	0
CHARACTER_SET_NAME	-	VARCHAR2(1)	NULL
CHAR_COL_DECL_LENGTH	-	NUMBER	0
GLOBAL_STATS	-	VARCHAR2(1)	NULL
USER_STATS	-	VARCHAR2(1)	NULL
AVG_COL_LEN	-	NUMBER	0

Table C-12 ALL_TAB_COMMENTS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
TABLE_TYPE	-	VARCHAR2(5)	"TABLE" or "VIEW"
COMMENTS	-	VARCHAR2(1)	NULL

Table C-13 ALL_TAB_PRIVS

Name	Null?	Type	Value
GRANTOR	-	VARCHAR2(32)	-
GRANTEE	-	VARCHAR2(32)	-
TABLE_SCHEMA	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
PRIVILEGE	-	VARCHAR2(10)	"SELECT" or "UPDATE" or "INSERT" or "DELETE" or "INDEX" or "ALTER" or "REFERENCES"
GRANTABLE	-	VARCHAR2 (3)	"YES"

Table C-14 ALL_TABLES

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
TABLESPACE_NAME	-	VARCHAR2(1)	NULL
CLUSTER_NAME	-	VARCHAR2(1)	NULL
IOT_NAME	-	VARCHAR2(1)	NULL
PCT_FREE	-	NUMBER	0
PCT_USED	-	NUMBER	0
INI_TRANS	-	NUMBER	0
MAX_TRANS	-	NUMBER	0
INITIAL_EXTENT	-	NUMBER	0
NEXT_EXTENT	-	NUMBER	0
MIN_EXTENTS	-	NUMBER	0
MAX_EXTENTS	-	NUMBER	0
PCT_INCREASE	-	NUMBER	0
FREELISTS	-	NUMBER	0
FREELIST_GROUPS	-	NUMBER	0
LOGGING	-	VARCHAR2(1)	NULL
BACKED_UP	-	VARCHAR2(1)	NULL
NUM_ROWS	-	NUMBER(10)	-
BLOCKS	-	NUMBER	0
EMPTY_BLOCKS	-	NUMBER	0
AVG_SPACE	-	NUMBER	0
CHAIN_CNT	-	NUMBER	0
AVG_ROW_LEN	-	NUMBER	0
AVG_SPACE_FREELIST_BLOCKS	-	NUMBER	0
NUM_FREELIST_BLOCKS	-	NUMBER	0
DEGREE	-	VARCHAR2(1)	NULL
INSTANCES	-	VARCHAR2(1)	NULL
CACHE	-	VARCHAR2(1)	NULL
TABLE_LOCK	-	VARCHAR2(1)	NULL
SAMPLE_SIZE	-	NUMBER	0
LAST_ANALYZED	-	DATE	to_date( '01-01-1980', 'dd-mm-yyyy')
PARTITIONED	-	VARCHAR2(1)	NULL
IOT_TYPE	-	VARCHAR2(1)	NULL
TEMPORARY	-	VARHCAR2(1)	NULL
SECONDARY	-	VARCHAR2(1)	NULL
NESTED	-	VARCHAR2(1)	NULL
BUFFER_POOL	-	VARCHAR2(1)	NULL
ROW_MOVEMENT	-	VARCHAR2(1)	NULL
GLOBAL_STATS	-	VARCHAR2(1)	NULL
USER_STATS	-	VARCHAR2(1)	NULL
DURATION	-	VARHCAR2(1)	NULL
SKIP_CORRUPT	-	VARCHAR2(1)	NULL
MONITORING	-	VARCHAR2(1)	NULL

Table C-15 ALL_USERS

Name	Null?	Type	Value
USERNAME	NOT NULL	VARCHAR2(32)	-
USER_ID	NOT NULL	NUMBER	0
CREATED	NOT NULL	DATE	SYSDATE

Table C-16 ALL_VIEWS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
VIEW_NAME	-	VARCHAR2(128)	-
TEXT_LENGTH	NOT NULL	NUMBER(10)	64
TEXT	-	VARCHAR2(64)	-
TYPE_TEXT_LENGTH	NOT NULL	NUMBER(10)	0
TYPE_TEXT	NOT NULL	CHAR(1)	" "
OID_TEXT_LENGTH	NOT NULL	NUMBER(10)	0
OID_TEXT	NOT NULL	CHAR(1)	" "
VIEW_TYPE_OWNER	NOT NULL	CHAR(1)	" "
VIEW_TYPE	NOT NULL	CHAR(1)	" "

Table C-17 COLUMN_PRIVILEGES

Name	Null?	Type	Value
GRANTEE	-	VARCHAR2(32)	-
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
GRANTOR	-	VARCHAR2(32)	-
INSERT_PRIV	-	VARCHAR2(1)	"Y"
UPDATE_PRIV	-	VARCHAR2(1)	"Y"
REFERENCES_PRIV	-	VARCHAR2(1)	NULL
CREATED	-	DATE	SYSDATE

Table C-18 DBA_CATALOG

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
TABLE_TYPE	-	VARCHAR2(7)	"TABLE" or "VIEW" or "SYNONYM"

Table C-19 DBA_COL_COMMENTS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
COMMENTS	NOT NULL	CHAR(1)	" "

Table C-20 DBA_OBJECTS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
OBJECT_NAME	-	VARCHAR2(128)	-
SUBOBJECT_NAME	-	VARCHAR2(1)	NULL
OBJECT_ID	-	NUMBER	-
DATA_OBJECT_ID	-	NUMBER	0
OBJECT_TYPE	-	VARCHAR2(9)	"TABLE" or "VIEW" or "SYNONYM" or "INDEX" or "PROCEDURE"
CREATED	-	DATE	-
LAST_DDL_TIME	-	DATE	-
TIMESTAMP	-	VARCHAR2(1)	NULL
STATUS	-	VARCHAR2(1)	NULL
TEMPORARY	-	VARCHAR2(1)	NULL
GENERATED	-	VARCHAR2(1)	NULL
SECONDARY	-	VARCHAR2(1)	NULL

Table C-21 DBA_TAB_COLUMNS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
DATA_TYPE	-	VARCHAR2(8)	-
DATA_TYPE_MOD	-	VARCHAR2(1)	NULL
DATA_TYPE_OWNER	-	VARCHAR2(1)	NULL
DATA_LENGTH	-	NUMBER	-
DATA_PRECISION	-	NUMBER	-
DATA_SCALE	-	NUMBER	-
NULLABLE	-	VARCHAR2(1)	"Y" or "N"
COLUMN_ID	-	NUMBER(5)	-
DEFAULT_LENGTH	-	NUMBER	0
DATA_DEFAULT	-	VARCHAR2(1)	NULL
NUM_DISTINCT	-	NUMBER	0
LOW_VALUE	-	NUMBER	0
HIGH_VALUE	-	NUMBER	0
DENSITY	-	NUMBER	0
NUM_NULLS	-	NUMBER	0
NUM_BUCKETS	-	NUMBER	0
LAST_ANALYZED	-	DATE	to_date( '01-01-1980', 'dd-mm-yyyy')
SAMPLE_SIZE	-	NUMBER	0
CHARACTER_SET_NAME	-	VARCHAR2(1)	NULL
CHAR_COL_DECL_LENGTH	-	NUMBER	0
GLOBAL_STATS	-	VARCHAR2(1)	NULL
USER_STATS	-	VARCHAR2(1)	NULL
AVG_COL_LEN	-	NUMBER	0

Table C-22 DBA_TAB_COMMENTS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
TABLE_TYPE	-	VARCHAR2(5)	"TABLE" or "VIEW"
COMMENTS	-	VARCHAR2(1)	NULL

Table C-23 DBA_TABLES

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
TABLESPACE_NAME	-	VARCHAR2(1)	NULL
CLUSTER_NAME	-	VARCHAR2(1)	NULL
IOT_NAME	-	VARCHAR2(1)	NULL
PCT_FREE	-	NUMBER	0
PCT_USED	-	NUMBER	0
INI_TRANS	-	NUMBER	0
MAX_TRANS	-	NUMBER	0
INITIAL_EXTENT	-	NUMBER	0
NEXT_EXTENT	-	NUMBER	0
MIN_EXTENTS	-	NUMBER	0
MAX_EXTENTS	-	NUMBER	0
PCT_INCREASE	-	NUMBER	0
FREELISTS	-	NUMBER	0
FREELIST_GROUPS	-	NUMBER	0
LOGGING	-	VARCHAR2(1)	NULL
BACKED_UP	-	VARCHAR2(1)	NULL
NUM_ROWS	-	NUMBER(10)
BLOCKS	-	NUMBER	0
EMPTY_BLOCKS	-	NUMBER	0
AVG_SPACE	-	NUMBER	0
CHAIN_CNT	-	NUMBER	0
AVG_ROW_LEN	-	NUMBER	0
AVG_SPACE_FREELIST_BLOCKS	-	NUMBER	0
NUM_FREELIST_BLOCKS	-	NUMBER	0
DEGREE	-	VARCHAR2(1)	NULL
INSTANCES	-	VARCHAR2(1)	NULL
CACHE	-	VARCHAR2(1)	NULL
TABLE_LOCK	-	VARCHAR2(1)	NULL
SAMPLE_SIZE	-	NUMBER	0
LAST_ANALYZED	-	DATE	to_date( '01-01-1980', 'dd-mm-yyyy')
PARTITIONED	-	VARCHAR2(1)	NULL
IOT_TYPE	-	VARCHAR2(1)	NULL
TEMPORARY	-	VARHCAR2(1)	NULL
SECONDARY	-	VARCHAR2(1)	NULL
NESTED	-	VARCHAR2(1)	NULL
BUFFER_POOL	-	VARCHAR2(1)	NULL
ROW_MOVEMENT	-	VARCHAR2(1)	NULL
GLOBAL_STATS	-	VARCHAR2(1)	NULL
USER_STATS	-	VARCHAR2(1)	NULL
DURATION	-	VARHCAR2(1)	NULL
SKIP_CORRUPT	-	VARCHAR2(1)	NULL
MONITORING	-	VARCHAR2(1)	NULL

Table C-24 DICT_COLUMNS

Name	Null?	Type	Value
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
COMMENTS	NOT NULL	VARCHAR2(1)	-

Table C-25 DICTIONARY

Name	Null?	Type	Value
TABLE_NAME	-	VARCHAR2(128)	-
COMMENTS	NOT NULL	CHAR(1)	" "

Table C-26 DUAL

Name	Null?	Type	Value
DUMMY	NOT NULL	VARCHAR2(1)	"X"

Table C-27 TABLE_PRIVILEGES

Name	Null?	Type	Value
GRANTEE	-	VARCHAR2(32)	-
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
GRANTOR	-	VARCHAR2(32)	-
SELECT_PRIV	-	VARCHAR2(1)	"Y" or "N"
INSERT_PRIV	-	VARCHAR2(1)	"Y" or "N"
DELETE_PRIV	-	VARCHAR2(1)	"Y" or "N"
UPDATE_PRIV	-	VARCHAR2(1)	"Y" or "N"
REFERENCES_PRIV	-	VARCHAR2(1)	"Y" or "N"
ALTER_PRIV	-	VARCHAR2(1)	"Y" or "N"
INDEX_PRIV	-	VARCHAR2(1)	"Y" or "N"
CREATED	-	DATE	SYSDATE

Table C-28 USER_CATALOG

Name	Null?	Type	Value
TABLE_NAME	-	VARCHAR2(128)	-
TABLE_TYPE	-	VARCHAR2(7)	"TABLE" or "VIEW" or "SYNONYM"

Table C-29 USER_COL_COMMENTS

Name	Null?	Type	Value
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
COMMENTS	-	VARCHAR2(1)	NULL

Table C-30 USER_COL_PRIVS

Name	Null?	Type	Value
GRANTOR	-	VARCHAR2 (32)	-
OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
GRANTEE	-	VARCHAR2(32)	-
PRIVILEGE	-	VARCHAR2(10)	"SELECT" or "UPDATE" or "REFERENCES"
GRANTABLE	-	VARCHAR2(3)	"YES" or "NO"

Table C-31 USER_CONS_COLUMNS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
CONSTRAINT_NAME	-	VARCHAR2(128)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
POSITION	-	NUMBER	0

Table C-32 USER_CONSTRAINTS

Name	Null?	Type	Value
OWNER	-	VARCHAR2(32)	-
CONSTRAINT_NAME	-	VARCHAR2(128)	-
CONSTRAINT_TYPE	-	VARCHAR2(1)	"R" or "P" or "U" or "C"
TABLE_NAME	-	VARCHAR2(128)	-
SEARCH_CONDITION	-	VARCHAR2(1)	NULL
R_OWNER	-	VARCHAR2(32)	NULL
R_CONSTRAINT_NAME	-	VARCHAR2(128)	NULL
DELETE_RULE	-	VARCHAR2(1)	NULL
STATUS	-	VARCHAR2(1)	NULL
DEFERRABLE	-	VARCHAR2(1)	NULL
DEFERRED	-	VARCHAR2(1)	NULL
VALIDATED	-	VARCHAR2(1)	NULL
GENERATED	-	VARCHAR2(1)	NULL
BAD	-	VARCHAR2(1)	NULL
RELY	-	VARCHAR2(1)	NULL
LAST_CHANGE	-	DATE

Table C-33 USER_IND_COLUMNS

Name	Null?	Type	Value
INDEX_NAME	-	VARCHAR2(128)	-
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
COLUMN_POSITION	-	NUMBER	0
COLUMN_LENGTH	-	NUMBER	0
DESCEND	-	VARCHAR2(1)	-

Table C-34 USER_INDEXES

Name	Null?	Type	Value
INDEX_NAME	-	VARCHAR2(128)	-
INDEX_TYPE	-	VARCHAR2(1)	NULL
TABLE_OWNER	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
TABLE_TYPE	-	VARCHAR2(5)	"TABLE"
UNIQUENESS	-	VARCHAR2(9)	"UNIQUE" or "NONUNIQUE"
COMPRESSION	-	VARCHAR2(1)	NULL
PREFIX_LENGTH	-	NUMBER	0
TABLESPACE_NAME	-	VARCHAR2(1)	NULL
INI_TRANS	-	NUMBER	0
MAX_TRANS	-	NUMBER	0
INITIAL_EXTENT	-	NUMBER	0
NEXT_EXTENT	-	NUMBER	0
MIN_EXTENTS	-	NUMBER	0
MAX_EXTENTS	-	NUMBER	0
PCT_INCREASE	-	NUMBER	0
PCT_THRESHOLD	-	NUMBER	0
INCLUDE_COLUMN	-	NUMBER	0
FREELISTS	-	NUMBER	0
FREELIST_GROUPS	-	NUMBER	0
PCT_FREE	-	NUMBER	0
LOGGING	-	VARCHAR2(1)	NULL
BLEVEL	-	NUMBER	0
LEAF_BLOCKS	-	NUMBER	0
DISTINCT_KEYS	-	NUMBER	-
AVG_LEAF_BLOCKS_PER_KEY	-	NUMBER	0
AVG_DATA_BLOCKS_PER_KEY	-	NUMBER	0
CLUSTERING_FACTOR	-	NUMBER	0
STATUS	-	VARCHAR2(1)	NULL
NUM_ROWS	-	NUMBER	0
SAMPLE_SIZE	-	NUMBER	0
LAST_ANALYZED	-	DATE	to_date( '01-01-1980', 'dd-mm-yyyy')
DEGREE	-	VARCHAR2(1)	NULL
INSTANCES	-	VARCHAR2(1)	NULL
PARTITIONED	-	VARCHAR2(1)	NULL
TEMPORARY	-	VARCHAR2(1)	NULL
GENERATED	-	VARCHAR2(1)	NULL
SECONDARY	-	VARCHAR2(1)	NULL
BUFFER_POOL	-	VARCHAR2(1)	NULL
USER_STATS	-	VARCHAR2(1)	NULL
DURATION	-	VARHCAR2(1)	NULL
PCT_DIRECT_ACCESS	-	NUMBER	0
ITYP_OWNER	-	VARCHAR2(1)	NULL
ITYP_NAME	-	VARCHAR2(1)	NULL
PARAMETERS	-	VARCHAR2(1)	NULL
GLOBAL_STATS	-	VARCHAR2(1)	NULL
DOMIDX_STATUS	-	VARCHAR2(1)	NULL
DOMIDX_OPSTATUS	-	VARCHAR2(1)	NULL
FUNCIDX_STATUS	-	VARCHAR2(1)	NULL

Table C-35 USER_OBJECTS

Name	Null?	Type	Value
OBJECT_NAME	-	VARCHAR2(128)	-
SUBOBJECT_NAME	-	VARCHAR2(1)	NULL
OBJECT_ID	-	NUMBER	-
DATA_OBJECT_ID	-	NUMBER	0
OBJECT_TYPE	-	VARCHAR2(9)	"TABLE" or "VIEW" or "SYNONYM" or "INDEX" or "PROCEDURE"
CREATED	-	DATE	-
LAST_DDL_TIME	-	DATE	-
TIMESTAMP	-	VARCHAR2(1)	NULL
STATUS	-	VARCHAR2(1)	NULL
TEMPORARY	-	VARCHAR2(1)	NULL
GENERATED	-	VARCHAR2(1)	NULL
SECONDARY	-	VARCHAR2(1)	NULL

Table C-36 USER_SYNONYMS

Name	Null?	Type	Value
SYNONYM_NAME	-	VARCHAR2(128)	-
TABLE_OWNER`	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
DB_LINK	-	VARCHAR2(1)	NULL

Table C-37 USER_TAB_COLUMNS

Name	Null?	Type	Value
TABLE_NAME	-	VARCHAR2(128)	-
COLUMN_NAME	-	VARCHAR2(128)	-
DATA_TYPE	-	VARCHAR2(8)	-
DATA_TYPE_MOD	-	VARCHAR2(1)	NULL
DATA_TYPE_OWNER	-	VARCHAR2(1)	NULL
DATA_LENGTH	-	NUMBER	-
DATA_PRECISION	-	NUMBER	-
DATA_SCALE	-	NUMBER	-
NULLABLE	-	VARCHAR2(1)	"Y" or "N"
COLUMN_ID	-	NUMBER(5)	-
DEFAULT_LENGTH	-	NUMBER	0
DATA_DEFAULT	-	VARCHAR2(1)	NULL
NUM_DISTINCT	-	NUMBER	0
LOW_VALUE	-	NUMBER	0
HIGH_VALUE	-	NUMBER	0
DENSITY	-	NUMBER	0
NUM_NULLS	-	NUMBER	0
NUM_BUCKETS	-	NUMBER	0
LAST_ANALYZED	-	DATE	to_date( '01-01-1980', 'dd-mm-yyyy')
SAMPLE_SIZE	-	NUMBER	0
CHARACTER_SET_NAME	-	VARCHAR2(1)	NULL
CHAR_COL_DECL_LENGTH	-	NUMBER	0
GLOBAL_STATS	-	VARCHAR2(1)	NULL
USER_STATS	-	VARCHAR2(1)	NULL
AVG_COL_LEN	-	NUMBER	0

Table C-38 USER_TAB_COMMENTS

Name	Null?	Type	Value
TABLE_NAME	-	VARCHAR2(128)	-
TABLE_TYPE	-	VARCHAR2(5)	"TABLE" or "VIEW"
COMMENTS	-	VARCHAR2(1)	NULL

Table C-39 USER_TAB_PRIVS

Name	Null?	Type	Value
GRANTEE	-	VARCHAR2(32)	-
TABLE_SCHEMA	-	VARCHAR2(32)	-
TABLE_NAME	-	VARCHAR2(128)	-
GRANTOR	-	VARCHAR2(32)	-
PRIVILEGE	-	VARCHAR2(6)	"SELECT" or "UPDATE" or "INSERT" or "DELETE" or "INDEX" or " "
GRANTABLE	-	VARCHAR2(3)	"YES"

Table C-40 USER_TABLES

Name	Null?	Type	Value
TABLE_NAME	-	VARCHAR2(128)	-
TABLESPACE_NAME	-	VARCHAR2(1)	NULL
CLUSTER_NAME	-	VARCHAR2(1)	NULL
IOT_NAME	-	VARCHAR2(1)	NULL
PCT_FREE	-	NUMBER	0
PCT_USED	-	NUMBER	0
INI_TRANS	-	NUMBER	0
MAX_TRANS	-	NUMBER	0
INITIAL_EXTENT	-	NUMBER	0
NEXT_EXTENT	-	NUMBER	0
MIN_EXTENTS	-	NUMBER	0
MAX_EXTENTS	-	NUMBER	0
PCT_INCREASE	-	NUMBER	0
FREELISTS	-	NUMBER	0
FREELIST_GROUPS	-	NUMBER	0
LOGGING	-	VARCHAR2(1)	NULL
BACKED_UP	-	VARCHAR2(1)	NULL
NUM_ROWS	-	NUMBER(10)	0
BLOCKS	-	NUMBER	0
EMPTY_BLOCKS	-	NUMBER	0
AVG_SPACE	-	NUMBER	0
CHAIN_CNT	-	NUMBER	0
AVG_ROW_LEN	-	NUMBER	0
AVG_SPACE_FREELIST_BLOCKS	-	NUMBER	0
NUM_FREELIST_BLOCKS	-	NUMBER	0
DEGREE	-	VARCHAR2(1)	NULL
INSTANCES	-	VARCHAR2(1)	NULL
CACHE	-	VARCHAR2(1)	NULL
TABLE_LOCK	-	VARCHAR2(1)	NULL
SAMPLE_SIZE	-	NUMBER	0
LAST_ANALYZED	-	DATE	to_date( '01-01-1980', 'dd-mm-yyyy')
PARTITIONED	-	VARCHAR2(1)	NULL
IOT_TYPE	-	VARCHAR2(1)	NULL
TEMPORARY	-	VARHCAR2(1)	NULL
SECONDARY	-	VARCHAR2(1)	NULL
NESTED	-	VARCHAR2(1)	NULL
BUFFER_POOL	-	VARCHAR2(1)	NULL
ROW_MOVEMENT	-	VARCHAR2(1)	NULL
GLOBAL_STATS	-	VARCHAR2(1)	NULL
USER_STATS	-	VARCHAR2(1)	NULL
DURATION	-	VARCHAR2(1)	NULL
SKIP_CORRUPT	-	VARCHAR2(1)	NULL
MONITORING	-	VARCHAR2(1)	NULL

Table C-41 USER_USERS

Name	Null?	Type	Value
USERNAME	-	VARCHAR2(32)	-
USER_ID	-	NUMBER	-
ACCOUNT_STATUS	-	VARCHAR2(4)	"OPEN"
LOCK_DATE	-	DATE	NULL
EXPIRY_DATE	-	DATE	NULL
DEFAULT_TABLESPACE	-	VARCHAR2(1)	NULL
TEMPORARY_TABLESPACE	-	VARCHAR2(1)	NULL
CREATED	-	DATE	NULL
INITIAL_RSRC_CONSUMER_GROUP	-	VARCHAR2(1)	NULL
EXTERNAL_NAME	-	VARCHAR2(1)	NULL

Table C-42 USER_VIEWS

Name	Null?	Type	Value
VIEW_NAME	-	VARCHAR2(128)	-
TEXT_LENGTH	-	NUMBER	64
TEXT	-	VARCHAR2(64)	-
TYPE_TEXT_LENGTH	-	NUMBER	0
TYPE_TEXT	-	VARCHAR2(1)	NULL
OID_TEXT_LENGTH	-	NUMBER	0
OID_TEXT	-	VARCHAR2(1)	NULL
VIEW_TYPE_OWNER	-	VARCHAR2(1)	NULL
VIEW_TYPE	-	VARCHAR2(1)	NULL

C Data Dictionary