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What are the three classes of SQL expression?
SQL expression consists of three clauses:
Select
From
Where
Explain in detail the consistency model of the distributed file system you studied (GFS or AFS). Present the consistency model chosen and how it was achieved through design. Clarit
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
Scenario 1: Power goes out after the first instruction. What happens?
Objectives After reading this unit you should be able to: Explain storage of databases on hard disks; Discuss the execution of various file Organisation techniques;
Explain current page table and shadow page table. The key idea behind the shadow paging method is to maintain two page tables during the life of the transaction: the current pa
differences between a classified catalog and a dictionary catalog
Define check point and its impact on data base recovery. Ans: There could be hundreds of transactions handled per minute, in a large on-line database system.
Question (a) Visual Basic is governed by an event processor. Explain the meaning of this phrase. (b) Differentiate between an general procedure and event procedure. (c)
which component of DBMS can be embedded in a program? The data manipulation language (DML) is a component which is embedded in a program.
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
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