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

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

a. 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

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

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

2 / 30

Category: CS403-mid

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.

3 / 30

Category: CS403-mid

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

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

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

c. one process (which represents the entire system)

d. all sources/sinks (external entities)

4 / 30

Category: CS403-mid

User rights information is stored in

a. Physical database

b. Logical database

c. Catalog

d. Buffer

5 / 30

Category: CS403-mid

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

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

b. all sources/sinks (external entities)

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

d. one process (which represents the entire system)

6 / 30

Category: CS403-mid

Which of the following is not true about relational tables?

a. Each column must have a unique name

b. The sequence of rows is significant

c. Column values are of the same kind

d. Each row is unique

7 / 30

Category: CS403-mid

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)

8 / 30

Category: CS403-mid

Select the correct statement among the following.

a. Role names are not technically necessary in relationship types when all the participating entity types are distinct.

b. Cardinality ratios for binary relationship are displayed on Entity Relationship Diagrams by using a diamond shape notation

c. Partial participation which is also called existence dependency is displayed as a double line connecting the participating entity type to the relationship

d. When different entity types participate only once in a single relationship type it is called a recursive relationship

9 / 30

Category: CS403-mid

Identify the correct statement with respect to normalization

a. Normalization is a formal technique that can be used only at the starting phase of the database design

b. The process of normalization through decomposition must achieve the dependency reservation property at any cost whereas the lossless join property is sometimes sacrificed.

c. Normalization can be used as a top-down standalone database design technique

d. The process of normalization through decomposition must achieve the lossless join property at any cost whereas the dependency reservation property is sometimes sacrificed.

10 / 30

Category: CS403-mid

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

a. Functional dependency

b. Logical data independence

c. Concurrency control.

d. Physical data independence

11 / 30

Category: CS403-mid

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

a. FOREIGN KEY

b. CHECK

c. UNIQUE

d. NOT NULL

12 / 30

Category: CS403-mid

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

a. primary key

b. superkey

c. common attribute

d. hyperlink

13 / 30

Category: CS403-mid

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

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

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

14 / 30

Category: CS403-mid

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

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

b. unique identifier for a row within a database table

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

d. allow any actions that would destroy links between tables

15 / 30

Category: CS403-mid

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

a. Ternary

b. M:M

c. 1:M

d. 1:1

16 / 30

Category: CS403-mid

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

a. specialization

b. uniqueness

c. completeness

d. inheritance

17 / 30

Category: CS403-mid

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. A and B

c. Only B

d. B and C

18 / 30

Category: CS403-mid

Select the correct statement about the ANSI/SPARC architecture

a. The conceptual level is a level of indication between the internal level and the external level

b. Any given database has many conceptual schemas and one physical schema, but it has only one external schemas.

c. The external level is not concerned with individual user perceptions, while the conceptual level is concerned with a community user perception.

d. The internal level in a database system will definitely be relational

19 / 30

Category: CS403-mid

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 3NF

b. The FD3 violates 3NF.

c. The relation Interview is in BCNF.

d. The FD2 violates 2NF

20 / 30

Category: CS403-mid

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

a. all tuples in a relation must be distinct

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

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

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

21 / 30

Category: CS403-mid

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

a. Communicating with database users

b. Allocation of storage locations and data structures

c. Establishing standards and procedures for database systems

d. Planning, designing and implementing database systems

22 / 30

Category: CS403-mid

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

a. Full functional dependency

b. Non-transitive dependency

c. Transitive dependency

d. Any kind of dependency

23 / 30

Category: CS403-mid

The ER- data model is an example of:

a. Physical database

b. Conceptual database

c. Relational database

d. Logical database

24 / 30

Category: CS403-mid

A collection of related data is

a. Logical model

b. Database

c. Relational model

d. Data

25 / 30

Category: CS403-mid

Which of the following is true about NOT NULL constraint?

a. enforce domain integrity

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

c. enforces the uniqueness of the values in a set of columns

d. prevents any actions that would destroy links between tables with the corresponding data values

26 / 30

Category: CS403-mid

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

a. DBMS

b. Data

c. Database

d. Data model

27 / 30

Category: CS403-mid

The Entity Relation Model models

a. Entities, Relationships and Processes

b. Entities and Relationships

c. Relationships

d. Entities

28 / 30

Category: CS403-mid

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

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

29 / 30

Category: CS403-mid

Which of the following is true for the relational model?

a. Constraint is a rule that restricts the values in a database

b. Null value is a blank or zero value given to an attribute value when its value is inapplicable or its value is unknown.

c. Degree of a relation is the number of rows in a relation

d. Complex key is a key consisting of more than one attribute.

30 / 30

Category: CS403-mid

Controlling redundancy in a database management system DOES NOT help to

a. avoid duplication

b. avoid unnecessary wastage of storage space

c. avoid unauthorised access to data

d. avoid inconsistency among data

Your score is

The average score is 0%

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.

Golden rules for good marks in VU Exams.

As per my experience, I have developed some golden rules for getting good marks in Virtual University Exams based on experience. I got 3.96 CGPA by following these rules.So here they are:

Never miss your Quiz, Assignment, or GDB.
Always try to do your Assignment on your own.
Try your best to finish your video lectures 10 days before exams.
Try your best to read your handouts twice before exams.
Read forward attempt backward.
Never schedule more than one paper on the same day.
Your most difficult paper should have a gap of 1 or more days.
Toughest paper must be scheduled first.
Read questions forward and attempt backward.
Don’t waste your time during a paper on illegal activities.

You can also download the Latest VU Handouts

To download the CS403 midterm past paper click here.

CS403 Midterm Past Paper online Practice Quiz

CS403 Midterm Past Paper

Practice Quiz from CS403 Midterm Past Paper

Note before downloading CS403 midterm past paper

Golden rules for good marks in VU Exams.

As per my experience, I have developed some golden rules for getting good marks in Virtual University Exams based on experience. I got 3.96 CGPA by following these rules.So here they are:

Leave a Comment Cancel Reply