i want sql queery changes on parent table reflects on child table automaticaly

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SQL-Server-2005

SQL-Server

i have two table Dept(parent) and emp(child).

both tables having deptno and deptno column in parent table is primarykey and deptno in emp table referential key.

i want change in deptno in dept table reflects in emp table also

Posted 19-Nov-09 18:57pm

Ramesh Reddy11111

Updated 2-Feb-11 15:24pm

Yusuf

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SimulationofSai · Answer 1 · 2009-11-20T09:47:00

Use Triggers. Write an Update/Delete trigger on the Dept table such that if there's any change to the deptnp column, it does an update of the emp table as well.

But it's usually not a good idea to keep updating/changing primary keys. The impact will felt only when the number of referenced records go up.