DBMS MCQ Quiz - Multiple Choice Questions & Answers

1. _____________ function divides one numeric expression by another and returns theremainder.

1. POWER
2. MOD
3. ROUND
4. REMAINDER

2. Which of the operations constitute a basic set of operations for manipulating relational data?

1. Predicate calculus
2. Relational calculus
3. Relational algebra
4. None of the above

3. Key to represent relationship between tables is called

1. Primary key
2. Secondary Key
3. Foreign Key
4. None of these

4. Relational calculus is a

1. Procedural language.
2. Non- Procedural language.
3. Data definition language.
4. High level language.

5. Transaction processing is associated with everything below except

1. producing detail, summary, or exception reports.
2. recording a business activity.
3. confirming an action or triggering a response.
4. maintaining data.

6. Which of the following operation is used if we are interested in only certain columns of atable?

1. PROJECTION
2. SELECTION
3. UNION
4. JOIN

7. _________ data type can store unstructured data

1. RAW
2. CHAR
3. NUMERIC
4. VARCHAR

8. In an E-R diagram attributes are represented by

1. rectangle.
2. square.
3. ellipse.
4. triangle.

9. In an E-R diagram an entity set is represent by a

1. rectangle.
2. ellipse.
3. diamond box.
4. circle.

10. A file manipulation command that extracts some of the records from a file is called

1. SELECT
2. PROJECT
3. JOIN
4. PRODUCT