Introduction to Database System – Online MCQs Test – Computer Science 9th

1. A key that defines a relationship between two entities is called:

2. Usually a third entity known as “junction table” is used to create the:

3. A database is composed of rows and columns which are called:

4. With the help of a junction table, many-to-many relationship is a combination of two:

5. (145, -35, 74586) are the examples of the data types called:

6. (5.6, 3.14, 554.9) are the examples of the data types called:

7. A _______ stores data in an organized form.

8. Several data records make up a:

9. They are used to express how the information will be stored in database.

10. The relationship that matches one record of an entity with only one record of another entity is called:

11. Multiple fields make up a:

12. (1,0) are the example of the data types called:

13. There are three most important components of data models, which are:

14. In ERD, relationships are symbolically represented by:

15. A key that allows only unique entries in a field is called:

16. In a database table of “Students”, the particulars of a single student will be a:

17. Several data tables make up a:

18. A field that stores the names of students should be defined as:

19. In a database table of “Students”, the address of the student will be a:

20. A contact list is one of the simplest example of a: