Database Management System (DBMS) MCQs with answers Page - 79

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Q. This extra information is usually maintained in the form of a at the client.

  • (A) cookie
  • (B) history
  • (C) remainder
  • (D) none of the mentioned

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Q. Which of the following is not true about HTML ?

  • (A) <meta>…</meta>
  • (B) <meta…./>
  • (C) <metadata>…</metadata>
  • (D) <metadata name=”” />

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Q. Html code contains:

  • (A) tags
  • (B) attributes
  • (C) elements
  • (D) all of the mentioned

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Q. Which of the following queries displays the sum of all employee salaries for those employees not making commission, for each job, including only those sums greater than 2500?

  • (A) select job, sum(sal) from emp where sum(sal) > 2500 and comm is null;
  • (B) select job, sum(sal) from emp where comm is null group by job having sum(sal) > 2500;
  • (C) select job, sum(sal) from emp where sum(sal) > 2500 and comm is null group by job;
  • (D) select job, sum(sal) from emp group by job having sum(sal) > 2500 and comm is not null;

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Q. Which of the following data structure is not linear data structure?

  • (A) arrays
  • (B) linked lists
  • (C) arrays & linked lists
  • (D) none of the mentioned

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Q. Which of the following data structure is linear data structure?

  • (A) trees
  • (B) graphs
  • (C) arrays
  • (D) none of the mentioned

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Q. Finding the location of the element with a given value is:

  • (A) traversal
  • (B) search
  • (C) sort
  • (D) none of the mentioned

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Q. Arrays are best data structures

  • (A) for relatively permanent collections of data
  • (B) for the size of the structure and the data in the structure are constantly changing
  • (C) all of the mentioned
  • (D) none of the mentioned

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Q. Linked lists are best suited

  • (A) for relatively permanent collections of data
  • (B) for the size of the structure and the data in the structure are constantly changing
  • (C) all of the mentioned
  • (D) none of the mentioned

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Q. In attacks, the attacker manages to get an application to execute an SQL query created by the attacker.

  • (A) sql injection
  • (B) sql
  • (C) direct
  • (D) application

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