oracle alter table disable constraint cascade

Data Integrity.

oracle alter table disable constraint cascade

Comandos Oracle – Segunda Parte – | Aitor Rigada.
To enable or disable triggers, the triggers must be in your schema or you must have .. Use table_constraint to add or modify an integrity constraint on the table. ... If you omit CASCADE , Oracle does not drop the PRIMARY KEY or UNIQUE.
1 General Management of Schema Objects - Oracle Documentation.

1 Maintaining Partitions - Oracle Documentation.

To enable or disable triggers, the triggers must be in your schema or you must have .. Use table_constraint to add or modify an integrity constraint on the table. ... If you omit CASCADE , Oracle does not drop the PRIMARY KEY or UNIQUE.
Example 5-12 Viewing Information About Constraints DROP TABLE DeptTab; CREATE TABLE DeptTab.
A CONSTRAINT clause is an optional part of a CREATE TABLE statement or ALTER. Note: If you attempt to add a primary key using ALTER TABLE and any of the .. CASCADE, the delete operation is propagated to the dependent table ( and.

Oracle SQL Constraints and Triggers - The Stanford University InfoLab.
Syntax. constraints::= Text description of clausesa.gif follows .. in the child table. Specify CASCADE if you want Oracle to remove dependent foreign key values.
Constraint clauses can appear in either CREATE TABLE or ALTER TABLE .. Specify CASCADE if you want Oracle to remove dependent foreign key values.
Cascade: When referenced data is updated, all associated dependent data is. When you define or alter a table, no additional programming is required.. You can disable integrity constraints temporarily so that large amounts of data can be.
To enable or disable triggers, the triggers must be in your schema or you must have .. See Also: constraint_clause for syntax and description of these constraints, ... If you omit CASCADE , Oracle does not drop the PRIMARY KEY or UNIQUE.
OTN Discussion Forums : how to drop a column which is a part of.

oracle alter table disable constraint cascade

Maintaining Data Integrity - Oracle Documentation.
6 Maintaining Data Integrity in Database Applications - Oracle.
Oct 30, 2012. In Oracle SQL / PLSQL a FOREIGN KEY is column / field that appears in. Syntax to create a FOREIGN KEY with ON DELETE CASCADE in CREATE statement is: .. ALTER TABLE comm ADD CONSTRAINT comm_fk FOREIGN KEY. DROPPING, DISABLING and ENABLING a FOREIGN KEY in Oracle.
alter table child_table_name modify constraint fk_name foreign key. How to add cascade delete in oracle when the foreign key is on the same.