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Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
properties of derirable decomposition
What are the two statements regarding transaction? The two statements regarding transaction of the form are:- A) Begin transaction B) End transaction
Define cardinality and participation constraints on a relationship type, completeness constraint on generalization. Ans: Cardinality defines the number of entities to wh
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Define what Immediate database modification technique uses? Ans: Both undo and redo.
Name the three major set of files on disk that compose a database in Oracle. There are three main sets of files on disk that compose a database. All the files are binary. These
need a DBMS system on any data for assignment.
Having Clause with sub queries: First we have to recollect the GROUP BYclause. The following query searches the minimum salary in every department. SELECT DEPTNO, MIN (SAL)
Mixed fragmentation: Sometimes, horizontal fragmentation or vertical fragmentation of a database schema by itself is insufficient to sufficiently distribute the data for some appli
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