Constraint « Table « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial
1.Introduction
2.Query Select
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5.Sequences
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10.SQL Data Types
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25.Cursor
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28.Trigger
29.SQL PLUS Session Environment
30.System Tables Data Dictionary
31.System Packages
32.Object Oriented
33.XML
34.Large Objects
35.Transaction
36.User Privilege
Oracle PL/SQL Tutorial » Table » Constraint 
6.10.Constraint
6.10.1.Adding a Constraint
6.10.2.Add constaint for a date type column: larger than a certain date
6.10.3.Adding a 'NOT NULL' Constraint
6.10.4.The database automatically assigns a name to the constraint
6.10.5.Dropping a Constraint
6.10.6.Disabling a Constraint
6.10.7.Add CASCADE to the end of a DISABLE CONSTRAINT clause
6.10.8.Enabling a Constraint
6.10.9.You can also choose to apply a constraint to new data only by specifying ENABLE NOVALIDATE.
6.10.10.Deferred Constraints
6.10.11.How to drop a constaint
6.10.12.Violate a constraint
6.10.13.Cascade constraints
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