CS403 Midterm Online Quiz

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2 votes, 5 avg

CS403-Midterm

1 / 50

Select the correct statement about the ANSI/SPARC architecture.

2 / 50

Which of the following is not a benefit of normalization?

3 / 50

Database management systems, operating systems, applications and utilities are all examples of ____.

4 / 50

A database system allows the following EXCEPT

5 / 50

Which of the following is NOT a feature of Context DFD?

6 / 50

Which of the following is INCORRECT statement concerning the database design process?

7 / 50

Which of the following constraints enforces entity integrity?

8 / 50

Consider the following statements.
A. An entity integrity constraint states that no primary key value can be null.
B. A referential integrity constraint is specified between two relations.
C. A foreign key cannot be used to refer to its own relation.
Identify which of the above statements is/are correct.

9 / 50

A software package designed to store and manage databases

10 / 50

Which of the following is a feature of PRIMARY KEY constraint?

11 / 50

Which of the following enforces a relation into 1st normal form?

12 / 50

Structural constraints of a relationship type refer to

13 / 50

Consider the following statements.
A. Conceptual schema which is the result of conceptual design is a logical description of all data elements and their relationships.
B. Internal level of the database architecture consists of the physical view of the database.
C. External level of the database architecture provides the user view of the database.
With respect to the ANSI/SPARC three level database architecture, which of the above is/are correct?

14 / 50

In a conceptual model for a university, what type of relationship exists between Grade and Student entities?

15 / 50

 statement among the following on the above diagram.

16 / 50

Which of the following statements is NOT correct?

17 / 50

User rights information is stored in

18 / 50

Structural constraints of a relationship type refer to

19 / 50

Which of the following is a correct way to implement one-to-many relationship while designing tables?

20 / 50

The ____ constraint specifies whether each entity supertype occurrence must also be a member of at least one subtype.

21 / 50

Which of the following is true about relational schema?

22 / 50

A relation (from the relational database model) consists of a set of tuples, which implies that

23 / 50

Which of the following is true about relational schema?

24 / 50

The ____ constraint specifies whether each entity supertype occurrence must also be a member of at least one subtype.

25 / 50

Which of the following most certainly implies the need for an entire table to implement?

26 / 50

Identify the correct statement.

27 / 50

Which of the following is correct?

28 / 50

Which feature of database provides conversion from inconsistent state of DB to a consistent state ensuring
minimum data loss?

29 / 50

Which of the following is true about NOT NULL constraint?

30 / 50

Which of the following is NOT a feature of Context DFD?

31 / 50

Identify the correct statement with respect to normalization.

32 / 50

Which of the following concepts is applicable with respect to 2NF?

33 / 50

Which of the following constraints enforces entity integrity?

34 / 50

Which of the following is true for the relational model?

35 / 50

Identify the correct statement.

36 / 50

Controlling redundancy in a database management system DOES NOT help to

37 / 50

Making a change to the conceptual schema of a database but not affecting the existing external schemas is an example of

38 / 50

A collection of concepts that can be used to describe the structure of a database

39 / 50

Consider the relation Interview (CandidateNo, InterviewDate, InterviewTime, StaffNo, RoomNo) and the following functional dependencies.
FD1 : CandidateNo, InterviewDate -> InterviewTime, StaffNo, RoomNo
FD2 : RoomNo, InterviewDate, InterviewTime -> StaffNo, CandidateNo
FD3 : StaffNo, InterviewDate -> RoomNo
Which of the following is correct?

40 / 50

The ER- data model is an example of:

41 / 50

Which of the following functions are NOT performed by a database administrator?

42 / 50

Who is responsible for authorizing access to the database, for coordinating and monitoring its use?

43 / 50

A collection of related data is

44 / 50

Identify the correct way to implement one-to-one relationship in tables?

45 / 50

User rights information is stored in

46 / 50

Select the correct statement among the following.

47 / 50

As part of database naming conventions, attribute names should use suffixes such as ID, NUMBER or CODE for the _______.

48 / 50

Identify the INCORRECT statement among the given

49 / 50

The ER- data model is an example of:

50 / 50

Which of the following statements is NOT correct?

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