OWNER

VARCHAR2(128)

Owner of the constraint definition

CONSTRAINT_NAME

VARCHAR2(128)

Name of the constraint definition

CONSTRAINT_TYPE

VARCHAR2(1)

Type of the constraint definition:

• C - Check constraint on a table

• P - Primary key

• U - Unique key

• R - Referential integrity

• V - With check option, on a view

• O - With read only, on a view

• H - Hash expression

• F - Constraint that involves a REF column

• S - Supplemental logging

TABLE_NAME

VARCHAR2(128)

Name associated with the table (or view) with the constraint definition

SEARCH_CONDITION

LONG

Text of search condition for a check constraint. This column returns the correct value only when the row originates from the current container.

SEARCH_CONDITION_VC

VARCHAR2(4000)

Text of search condition for a check constraint. This column may truncate the search condition.

R_OWNER

VARCHAR2(128)

Owner of the table referred to in a referential constraint

R_CONSTRAINT_NAME

VARCHAR2(128)

Name of the unique constraint definition for the referenced table

DELETE_RULE

VARCHAR2(9)

Delete rule for a referential constraint:

• CASCADE

• SET NULL

• NO ACTION

STATUS

VARCHAR2(8)

Enforcement status of the constraint:

• ENABLED

• DISABLED

DEFERRABLE

VARCHAR2(14)

Indicates whether the constraint is deferrable (DEFERRABLE) or not (NOT DEFERRABLE)

DEFERRED

VARCHAR2(9)

Indicates whether the constraint was initially deferred (DEFERRED) or not (IMMEDIATE)

VALIDATED

VARCHAR2(13)

When STATUS = ENABLED, possible values are:

• VALIDATED - All data obeys the constraint (that is, the existing data in the table was validated when the constraint was enabled, as well as any subsequent data entered into the table)

• NOT VALIDATED - All data may not obey the constraint (that is, the existing data in the table was not validated when the constraint was enabled, but subsequent data entered into the table was validated)

When STATUS = DISABLED, possible values are:

• VALIDATED - All data obeys the constraint, but the unique index on the constraint has been dropped. This setting is useful in data warehousing environments, but has some restrictions. Refer to Oracle Database Data Warehousing Guide for more information on this setting.

• NOT VALIDATED - All data may not obey the constraint

GENERATED

VARCHAR2(14)

Indicates whether the name of the constraint is user-generated (USER NAME) or system-generated (GENERATED NAME)

BAD

VARCHAR2(3)

Indicates whether this constraint specifies a century in an ambiguous manner (BAD) or not (NULL). To avoid errors resulting from this ambiguity, rewrite the constraint using the TO_DATE function with a four-digit year.

See Also: the TO_DATE function in Oracle Database SQL Language Reference and Oracle Database Development Guide

RELY

VARCHAR2(4)

When VALIDATED = NOT VALIDATED, this column indicates whether the constraint is to be taken into account for query rewrite (RELY) or not (NULL).

When VALIDATED = VALIDATED, this column is not meaningful.

See Also: constraints in Oracle Database SQL Language Reference

LAST_CHANGE

DATE

When the constraint was last enabled or disabled

INDEX_OWNER

VARCHAR2(128)

Name of the user owning the index

INDEX_NAME

VARCHAR2(128)

Name of the index (only shown for unique and primary-key constraints)

INVALID

VARCHAR2(7)

Indicates whether the constraint is invalid (INVALID) or not (NULL)

VIEW_RELATED

VARCHAR2(14)

Indicates whether the constraint depends on a view (DEPEND ON VIEW) or not (NULL)

ORIGIN_CON_ID

VARCHAR2(256)

The ID of the container where the data originates. Possible values include:

• 0: This value is used for rows in non-CDBs. This value is not used for CDBs.

• n: This value is used for rows containing data that originate in the container with container ID n (n = 1 if the row originates in root)