Sql constraintsa constraint is a rule or limitation that we place on the data in a database that we can put into a column(s). a constraint is part of the table. we can apply constraints when we create ...

By using cascading referential integrity constraints, you can define the actions that SQL Server 2005 takes when a user tries to delete or update a key to which existing foreign keys point.

However, i had multiple databases using the schema, and had different names for the FK constraints. This seemed like a good use of the DropForeignKey overload: DropForeignKey(string dependentTable, ...

If we use addColumn to alter table in liquibase, Default value is not honoring and marking new column value in table as NULL. If not null constraint is not defined for the added column. Syntax for the ...

Constraints in sql are used to define rules for the table and columns in a database and also make sure that data are accurate and trusted in the database. constraints are responsible for the ...