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Question:What is referential integrity?



asked Sep 13, 2013 in Java Interview Questions by rajesh
edited Sep 12, 2013
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Referential integrity is the automatic enforcement of referential constraints that exist between a reference table and a

referencing table. When referential integrity is enforced, the value of a foreign key exists as  a primary key value in the

reference table. In other words, when referential integrity is enforced, all of the foreign key values in, for example, the 

“department code” column in an “employee” table exist as primary key values in a “department” table.

answered Sep 13, 2013 by rajesh
edited Sep 12, 2013
0 votes

 

Referential integrity is the automatic enforcement of referential constraints that exist between a reference table and a

referencing table. When referential integrity is enforced, the value of a foreign key exists as  a primary key value in the

reference table. In other words, when referential integrity is enforced, all of the foreign key values in, for example, the 

“department code” column in an “employee” table exist as primary key values in a “department” table.

answered Sep 13, 2013 by rajesh
edited Sep 12, 2013

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