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3NF Normal Form A relation schema R is in 3NF if it is in 2NF and for each FD X A either of the following is true X is a Super-key of R. A is a prime attribute of R
Breaking into Subsystems Decomposition is a significant technique for coping with complexity based on idea of divide and conquers. In dividing a problem into sub problems, the
Haw does it work one database application
what is specialization?
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
Higher Normal Forms Is there more normal forms beyond BCNF? Yes, though, these normal forms are not based on the concept of functional dependence. More normalisation is needed if
With the linear commit protocol, sites are connected in a chain, and the subtransaction at the left-hand end of the chain initiates the protocol. Propose a crash recovery protocol
what do you mean by consistency in rdbms?
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