Database Management Questions and Answers

Software Programming : Database Management QUESTIONS AND ANSWERS :: part20 : 6 to 10

Following Software Programming language Entrance Multiple choice objective type questions and answers will help you in Software Programming 2024 examinations :

6.A super key that does not contain a subset of attributes that is itself a super key is called a

Candidate key

Primary key

Super key

Secondary key

Foreign key.

7.In the context of a database table, the statement "A determines B" indicates that #315.In the context of a database table, the statement "A determines B" indicates that

Knowing the value of attribute A you can not look up the value of attribute B

You do not need to know the value of attribute A in order to look up the value of attribute

Knowing the value of attribute B you can look up the value of attribute A

Knowing the value of attribute A you can look up the value of attribute B

None of the above.

8.A table that displays data redundancies yields ____________ anomalies.

Update

Insertion

Deletion

All of the above

None of the above.

9.Which of the following is not true about B+ trees?

B+ tree index takes the form of balanced tree

Performance of B+ tree degrades as the file grows

Look-up in B+ tree is straightforward and efficient

Insertion and deletion in B+ tree is complicated but efficient

None of the above.

10._______ means that data used during the execution of a transaction cannot be used by a second transaction until the first one is completed.

Serializability

Atomicity

Isolation

Time stamping

Durability.

More Database Management QUESTIONS AND ANSWERS available in next pages

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Database Management Questions & Answers: part20

Database Management Questions and Answers

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