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SELECT Statement
This statement is used for retrieving information from the databases. It can be coupled with many clauses. Let us talk about these clauses in more detail:
Using Arithmetic operator
Example:
SELECT ENAME, SAL, SAL+300
FROM EMP;
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
crete a data base relationship model Entity: Students; Professors; Dormitories buildings; Attributes of students: Name; Address; Dorm;
Wait-die" scheme : The idea is based on non-preventive method. It is based on a simple rule: If Ti requests a database resource that is held by T
Different stages of DDLC ?
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Speedup Query Processing: A query that includes data at various sites can be split into sub-queries. These sub- queries can be implemented in parallel by various sites. Such parall
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Determine the OBJECTIVES of object design After passing through this unit, you should be able to: describe and apply concept of generalisation; understand and appl
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