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Describe domain constraints.
Domain constraints contain entity integrity and referential integrity. The domain is a set of values that might be assigned to an attribute. The entity integrity rule states that no part of a primary key cannot be null. Referential integrity states that every foreign key value must match a primary key value or be null.
object oriented database
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
Most computer systems authenticate users by asking them for the user name and password. However, the user names and passwords often can be guessed by hackers. Suggest an automated,
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The Form input elements are: Reporter name text type input Password
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difference between internal schema and external schema in DBMS
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