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What is object identity?
An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
Question A What is operational intelligence? Question B What is Business Intelligence? Explain the components of BI architecture Question C Differentiate between databas
Explain the Exec statement in SQL Ans: Exec statement has the structure EXEC SQL END-EXEC Embeded SQl statements are of a form identical to non embedded SQL statem
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
brief history,definition,current trends and future trends if any of data fragmentation
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
What is the meaning of Recovery? In deferred update methods, if a transaction fails before arriving its commit point, it will not have altered the database in any way, so UNDO
HOW MANY TYPES OF VIEWS
intent locking
What do you mean by atomicity and aggregation? Atomicity : Either all actions are carried out or none are. Users should not have to worry about the effect of incomplete trans
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