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Define weak and strong entity sets?
Weak entity set: entity set that do not have key attribute of their own are known as weak entity sets.
Strong entity set: Entity set that has a primary key is term a strong entity set.
Question: (a) List four disadvantages of the File Processing System as compared to the Database Systems. (b) The integrity of a database is enforced by integrity rules. One
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In which format database schema is written ? Data base schema is written in the DDL format.
In E-R Diagram how relationship type is represented ? In E-R Diagram relationship type is represented as a Diamond.
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