Home Virtual university online quiz CS403 Midterm Past Paper online Practice Quiz

CS403 Midterm Past Paper online Practice Quiz

Abdurrab

January 17, 2022

1159

Facebook

Twitter

Tumblr

CS403 Midterm Past Paper

You have come here while searching for CS403 midterm past papers. But before going to download the CS403 midterm past paper. I have a better option for you. That is, that you can attempt the online quiz of CS403.

Practice Quiz from CS403 Midterm Past Paper

This quiz will evaluate your preparation for the CS403 midterm examination and it is based on the past papers of CS403. The purpose of this quiz is to evaluate your performance in this subject. If you can pass this quiz, then there is a great chance that you can secure good marks in your exams.

0 votes, 0 avg

Your Time starts now

Times Up

Created on January 17, 2022 By

faisal_faisi

CS403

CS403 Midterm Past Papers Practice Quiz

Welcome to CS403 Midterm Online Practice Quiz.

You can check your preparation of CS403 for your Exams here.

Questions Will be different every time you will attempt.

1 / 30

Category: CS403-mid

1. Which of the following is INCORRECT with respect to file systems?

a. Some physical organisations use pointers to record blocks to locate records on disk.

b. At the physical level, pointer or hashed address scheme may be employed to provide a certain degree of data independence at the user level.

c. The efficiency of a file system depends on how efficiently operations such as retrieve, insert, update, delete may be performed on the information stored in the file

d. A logical record is concerned with efficient storage of information in the secondary storage devices.

2 / 30

Category: CS403-mid

2. Structural constraints of a relationship type refer to

a. identifying the owner entity type relevant to a given entity type

b. the role that a participating entity from the entity type plays in each relationship instance

c. the constraints applicable in granting access to tables, columns and views in a database schema

d. whether the existence of an entity depends on it being related to another entity via the relationship type.

3 / 30

Category: CS403-mid

3. Which of the following is not a benefit of normalization?

a. Maximize redundancy

b. Minimize updation anomolies

c. Minimize insertion anomolies

d. Minimize deletion anomolies

4 / 30

Category: CS403-mid

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

a. Every non-key attribute is partially dependent on super key

b. The domain of attribute must include only atomic values.

c. non-key attribute is non-transitively dependent on primary key.

d. Every non-key attribute is fully functionally dependent on primary key

5 / 30

Category: CS403-mid

5. A collection of related data is

a. Relational model

b. Data

c. Logical model

d. Database

6 / 30

Category: CS403-mid

6. Controlling redundancy in a database management system DOES NOT help to

a. avoid unnecessary wastage of storage space

b. avoid duplication

c. avoid inconsistency among data

d. avoid unauthorised access to data

7 / 30

Category: CS403-mid

7. A database system allows the following EXCEPT

a. more critical functions in organisations to be computerised and the need to keep a large volume of data available in an up to the minute current state increased

b. any user to access all its data

c. integration of data across multiple applications into a single application

d. management and control of data towards an efficient working of an organisation.

8 / 30

Category: CS403-mid

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

a. M:M

b. 1:1

c. Ternary

d. 1:M

9 / 30

Category: CS403-mid

9. 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

a. Only A

b. B and C

c. Only B

d. A and B

10 / 30

Category: CS403-mid

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

a. all tuples in a particular relation may have different attributes

b. for any two tuples, the values associated with all of their attributes may be the same.

c. relational model supports multi-valued attributes whose values can be represented in sets.

d. all tuples in a relation must be distinct

11 / 30

Category: CS403-mid

11. Identify the INCORRECT statement among the given.

a. Age can be considered as a single value attribute of a person.

b. One cannot consider something which has conceptual existence like a course in a degree program as an entity

c. An entity type describes the schema or intension for a set of entities which share the same structure.

d. An entity may be an object with a physical existence like a car, a house or an Employee

12 / 30

Category: CS403-mid

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

a. one process (which represents the entire system)

b. data flows linking the process to the sources and sinks (external entities)

c. sub-processes (which explain and decomposed the major process into small processes)

d. all sources/sinks (external entities)

13 / 30

Category: CS403-mid

13. The Entity Relation Model models

a. Relationships

b. Entities and Relationships

c. Entities

d. Entities, Relationships and Processes

14 / 30

Category: CS403-mid

14. Which of the following constraints enforces entity integrity?

a. CHECK

b. FOREIGN KEY

c. PRIMARY KEY

d. NOT NULL

15 / 30

Category: CS403-mid

15. If K is a foreign key in relation R1, then

a. K cannot have a null value for tuples in R1.

b. every tuple of R1 has a distinct value for K.

c. K is a key for some other relation

d. K is a primary key for R1.

16 / 30

Category: CS403-mid

16. An entity can be logically connected to another by defining a ____.

a. common attribute

b. superkey

c. primary key

d. hyperlink

17 / 30

Category: CS403-mid

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

a. limit the values that can be placed in a column

b. allow any actions that would destroy links between tables

c. unique identifier for a row within a database table

d. enforces that the column will only accept null values.

18 / 30

Category: CS403-mid

18. Which of the following constraints enforces entity integrity?

a. CHECK

b. NOT NULL

c. FOREIGN KEY

d. PRIMARY KEY

19 / 30

Category: CS403-mid

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

a. uniqueness

b. specialization

c. inheritance

d. completeness

20 / 30

Category: CS403-mid

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

a. all sources/sinks (external entities)

b. one process (which represents the entire system)

c. data flows linking the process to the sources and sinks (external entities)

d. sub-processes (which explain and decomposed the major process into small processes)

21 / 30

Category: CS403-mid

21. A description on a particular collection of data using the given data model

a. Relation

b. None of the above

c. Schema

d. Database

22 / 30

Category: CS403-mid

22. A weak entity type

a. must have total participation in an identifying relationship

b. both (a) and (b)

c. none of the above

d. does not have a key attribute(s)

23 / 30

Category: CS403-mid

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

a. Concurrency control.

b. Logical data independence

c. Functional dependency

d. Physical data independence

24 / 30

Category: CS403-mid

24. 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?

a. The relation Interview is in BCNF.

b. The relation Interview is in 3NF

c. The FD3 violates 3NF.

d. The FD2 violates 2NF

25 / 30

Category: CS403-mid

25. User rights information is stored in

a. Buffer

b. Physical database

c. Logical database

d. Catalog

26 / 30

Category: CS403-mid

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

a. by splitting the data into two tables with primary key and foreign key relationships

b. using a junction table with the keys from both the tables forming the composite primary key of the junction table.

c. by splitting each table into three

d. as a single table and rarely as two tables with primary and foreign key relationships.

27 / 30

Category: CS403-mid

27. Identify the constraint that limits the values that can be placed in a column.

a. NOT NULL

b. FOREIGN KEY

c. UNIQUE

d. CHECK

28 / 30

Category: CS403-mid

28. Which of the following is not true about relational tables?

a. The sequence of rows is significant

b. Each row is unique

c. Column values are of the same kind

d. Each column must have a unique name

29 / 30

Category: CS403-mid

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

a. An identifying relationship

b. A binary relationship

c. A recursive relationship

d. A ternary relationship

30 / 30

Category: CS403-mid

30. Structural constraints of a relationship type refer to

a. whether the existence of an entity depends on it being related to another entity via the relationship type.

b. identifying the owner entity type relevant to a given entity type

c. the role that a participating entity from the entity type plays in each relationship instance

d. the constraints applicable in granting access to tables, columns and views in a database schema.

Your score is

The average score is 0%

Share your results with your fellow students

LinkedIn Facebook Twitter VKontakte

Exit

Note before downloading CS403 midterm past paper

One thing to note dear fellows that you must don’t rely on these papers only. They can be a source of help but not an ultimate solution. If you want to get good marks in your exams you are advised to go through all of your handouts and must watch all of the video lectures.