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A View may be defined of as a virtual table, that is, a table that does not really exist in its own right but is instead inferred from one or more underlying base data table. There is no stored file that direct shows the view instead a definition of view is loaded in data dictionary. Restructuring and growth of base tables is not shown in views. Thus the view may insulate end users from the effects of developing and growth in the database.
Why a report generator is used ? Report generator is used for print files on paper.
Removing a Synonym: DROP SYNONYM D30;
What is transaction? Collections of operations that form a single logical unit of work are known as transactions.
What is meant by log-based recovery? The most widely used structures for recording database changes is the log. The log is a sequence of log records, recording all the update a
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What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
What is a disjoint less constraint? Ans: It needs that an entity belongs to no much more than one level entity set. Disjoint less constraint needs that an entity belongs to
Introductory course and so does not require any fancy coding. I will provide a guidance document to help you in producing the solutions.
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
For each 1: n relationship type R involving two entities E1 and E2, we recognize the entity type (say E1) at the n-side of the relationship type R and contain primary key of the en
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