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List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
under what condition log based recovery is feasible?
Differentiate between logical database design and physical database design. Show how this separation leads to data independence? Basis Logical Databas
Explain the main advantages of DBMS over File Oriented System ?
What is the difference between internal tables and extract datasets? The lines of an internal table always have the similar structure. By using extract datasets, you can ha
What is difference between primary index and secondary index? Primary Index a) It is an ordered file whose records are of fixed length along with two fields. b) Only base
Explain concurrency control? Concurrency control Oracles multiversion concurrency control varies from the concurrency mechanism used by some other data base vendors. Read
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
FitAll Ltd is a company that manufactures clothes. Its processes are manual and there are stand-alone Information Systems that aid to manage them. The Information Systems were purc
Control as State within Program 1. The term control exactly means to check effect of input within a program. For illustration, in Figure, after the ATM card is inserted (a
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