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Illustrate the statement 'Projection operation distributes over the union operation'. Give an example. Ans: Π L (E 1 ∪ E 2 ) = (Π L (E 1 )) ∪ (Π L (E 2 )) This says th
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
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Normalize the following tables upto and including the 3NF. Submit a 1 page printout of only the final set of normalized tables in Data Architect. Just use Data Architect to do the
You are managing the following database system: • DBMS: Oracle 11g • OS: Sun Solaris • System architecture: Web-based application using ASP.Net • Purpose of Server: HR manage
Briefly describe concurrency execution? Lock - based protocols Locks There are several modes in which a data item may be locked in this section we restrict our attention
Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
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Why a report generator is used ? Report generator is used for print files on paper.
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