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Consider the relation PERSON. If you want to display details of persons having age less than or equal to 30 than the select operation will be used as follows: σ AGE The resu
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
Multiple-mode locks : It offers two locks: exclusive locks and shared locks. But why do we require these two locks? There are a lot of transactions in the database system that neve
The functions of DBA ?
List some instances of collection types? a) sets b) arrays c) multisets
differences between a classified catalog and a dictionary catalog
What are advantages of object models? Object models are efficient for communicating with the application experts and reaching a consensus about the significant aspects of the p
What is Nested Queries explain in details? Nested Queries - A SELECT query could have subquery(s) in it. While a SELECT query having another SELECT query in it, is known as n
Scenario 1: Power goes out after the first instruction. What happens?
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