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what is data link layer
Performance of Various Concurrency Control Mechanisms
Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
prototype of a distributed information system for a national car part retail outlet chain.
What is called a query evaluation plan? A sequence of primitive operations that can be used to assess a query is a query evaluation plan or a query implementation plan.
What are the types of storage devices? Primary storage Secondary storage Tertiary storage Volatile storage Nonvolatile storage
ddlc
To eliminate duplicate rows (distinct operator) Example: SELECT DISTINCT DEPTNO FROM EMP;
Question 1 What do you mean by database management system? Question 2 Write a note on Object-Oriented Model Question 3 Explain Sequential File Organization Question
task upload
What are the several forms of identity? a) Value b) Name c) Built-in
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