Olete.in – MCQs, Mock Tests & Government Job Prep | Data Base Management System (DBMS) Data Base Management System (DBMS) Mcq set 2

When primary key is made up of two or more columns then it is called __ primary key.

1. Mixed
2. Reference
3. Composite
4. Compost

✅ Correct Answer: 3

A key which is referring to the primary key of another table is called __

1. Common
2. Same
3. Unique
4. None of the above

✅ Correct Answer: 4

When data is stored, maintained and retrieved from multiple tables then special database software are required called _

1. DBMS
2. RDBMS
3. Special DBMS
4. All the above

✅ Correct Answer: 2

Identify the Foreign Key from table “Sales” Table Client: ClientID (primary Key) clientname clientphone Table : Sales SalesID (Primary Key) ClientID Profit

1. SalesID
2. Profit
3. Clientphone
4. ClientID

✅ Correct Answer: 4

Which of the following is not valid field of table “Student” a. admno b.name c. fees d. salary

1. admno
2. name
3. fees
4. salary

✅ Correct Answer: 4

In RDBMS, data is organized in the form of __________________

1. Table
2. Record
3. Field
4. None of the above

✅ Correct Answer: 4

SQL stands for _________________

1. Structured Queue Language
2. Structured Query Language
3. Structured Query Lang
4. None of the above

✅ Correct Answer: 2

All the values in ________ are of same type.

1. Records
2. Table
3. Database
4. Fields

✅ Correct Answer: 4

_ represent a single data item in a table.

1. Tuples
2. Attributes
3. Relation
4. All the above

✅ Correct Answer: 1

________ are the basic building blocks of a database.

1. Tables
2. Record
3. Fields
4. All the above

✅ Correct Answer: 1

We can create table :

1. in design view
2. use Wizard
3. Both of the above
4. None of the above

✅ Correct Answer: 3

By default data type of fields is.

1. Text[Varchar]
2. Text[Char]
3. Int
4. Long

✅ Correct Answer: 1

By default the length of Varchar data type is __

1. 20
2. 30
3. 40
4. 50

✅ Correct Answer: 4

By default the name of the table is ______

1. Tab 1
2. Table 1
3. First Table
4. Untitled 1

✅ Correct Answer: 2

___ are used to identify which type of data we are going to store in the database.

1. Datatype
2. Record
3. Table
4. Attributes

✅ Correct Answer: 1

Which data type will be appropriate to store information as Salary, Fees, Price etc b. Alphanumeric Data types

1. Alphanumeric Data types
2. Numeric Data type
3. Binary Data types
4. Date Time

✅ Correct Answer: 2

Which of the following is not a numeric data type?

1. Tinyint
2. Smallint
3. Boolean
4. Date

✅ Correct Answer: 4

Which of the following data types can not store decimal values?

1. Decimal
2. Real
3. Numeric
4. Boolean

✅ Correct Answer: 4

Which of the following will occupy more space in computer memory?

1. Bigint
2. Integer
3. Smallint
4. Boolean

✅ Correct Answer: 1

__ data types are used for storing photos, music files etc

1. Binary
2. Alphanumeric
3. Numeric
4. Special

✅ Correct Answer: 1

Char is a ______ length data type and varchar is a ______ length data type.

1. Fixed, Variable
2. Variable, Fixed
3. Variable, Variable
4. Fixed, Fixed

✅ Correct Answer: 1

Which field is suitable for storing records of employees?

1. EmpNo
2. Empname
3. Salary
4. All the above

✅ Correct Answer: 4

Auto Value is a property of __ data type .

1. Numeric
2. Character
3. Binary
4. Date

✅ Correct Answer: 1

Which of the following property help to set the number of characters in Varchar type.

1. Auto value
2. Required
3. Default Value
4. Length

✅ Correct Answer: 4

Which property ensures that field can not be left blank?

1. Entry required
2. Format
3. Required Entry
4. Required

✅ Correct Answer: 1

By default the length of the Integer data type is ______________

1. 10
2. 15
3. 20
4. 25

✅ Correct Answer: 1

Which of the following property to be turned “yes” so that value will be auto incremented?

1. Default
2. Format
3. Auto value
4. Length

✅ Correct Answer: 3

Which of the following is not the binary data types?

1. Longvarbinary
2. Varbinary
3. Binary
4. Charbinary

✅ Correct Answer: 4

Which of the following is not the date time data types?

1. Date
2. Time
3. Datestamp
4. Timestamp

✅ Correct Answer: 3

Which data type is used to store value of fields like “Date of Birth”?

1. Date Time
2. Varchar
3. Integer
4. Other

✅ Correct Answer: 1

We can ____________________ data in table.

1. modify
2. insert
3. delete
4. All the above

✅ Correct Answer: 4

In which view data can be entered in table?

1. Datasheet view
2. Design view
3. Both of the above
4. None of the above

✅ Correct Answer: 1

In which mode we can change the structure of table?

1. Datasheet view
2. Design view
3. Structure view
4. All the above

✅ Correct Answer: 2

Sorting means to arrange data in _______________ order.

1. increasing
2. decreasing
3. increasing or decreasing
4. All the above

✅ Correct Answer: 3

In Base data can be linked between two or more tables with the help of _________________

1. primary key
2. foreign key
3. primary and foreign key
4. None of the above

✅ Correct Answer: 3

Relationship can be created between

1. two tables only
2. one table only
3. two or more tables
4. None of the above

✅ Correct Answer: 3

Relationship between tables can be created from _____________________ menu.

1. View
2. Insert
3. Windows
4. Tools

✅ Correct Answer: 4

There are __________________ types of relationship which can be created between tables.

1. three
2. two
3. four
4. infinite

✅ Correct Answer: 1

Which language help to extract/fetch data from table?

1. MySQL
2. Python
3. OOBase
4. HTML

✅ Correct Answer: 1

We can create query (in Open Office Base) in _______________________

1. In design view
2. Using wizard
3. Both of the above
4. None of the above

✅ Correct Answer: 3

SQL stands for __________________

1. Structural Query Language
2. Structured Query Language
3. Skeletal Query Language
4. None of the above

✅ Correct Answer: 2

_________ statement is used to retrieve data from table.

1. Delete
2. Update
3. Print
4. Select

✅ Correct Answer: 3

_________ is the most common DML command.

1. Delete
2. Update
3. Select
4. All the above

✅ Correct Answer: 3

DML stands for ____________

1. Data Manipulation Language
2. Database Manipulation Language
3. Data Modify Language
4. All the above

✅ Correct Answer: 1

Which of the following clause return specific rows?

1. Order By
2. Where
3. Having
4. Specific

✅ Correct Answer: 2

Which of the following clause return records in ascending order?

1. Order By
2. Where
3. Order Asc
4. Order Inc

✅ Correct Answer: 1

Command to display all the data in the table “emp” is. a.

1. Select * from emp
2. Select * from emp;
3. Select all from emp
4. Select all from emp;

✅ Correct Answer: 2

Command to display all the data in the table “emp” is.

1. Select * from emp
2. Select * from emp;
3. Select all from emp
4. Select all from emp;

✅ Correct Answer: 2

Shortcut to execute query in Create Query in SQL View is __

1. F7 Key
2. F5 Key
3. F8 Key
4. F6 Key

✅ Correct Answer: 2

Which command is used to display the salary of all the employees after incrementing by 1000.

1. Select
2. b. Update
3. Modify
4. Change

✅ Correct Answer: 1

Select “salary” from emp;

1. will display all the records of table emp
2. will display only particular columns of table emp
3. will display only salary column of table emp;
4. None of the above

✅ Correct Answer: 3

Select “empname”, “salary” * 3 from emp;

1. will increase the salary three times of all employees in table
2. display name and three times salary
3. give error
4. None of the above

✅ Correct Answer: 2

To get details about the list of students whose favorite color is blue. Query for this is :

1. select all from Stud where fav_Color=’Blue’;
2. select name from Stud where fav_Color=’Blue’;
3. To get details about the list of students whose favorite color is blue. Query for this is :
4. select all from Stud where fav_Color is ’Blue’;

✅ Correct Answer: 3

select * from Stud order by “Rollno” ASC;

1. display all the records of table.
2. display records in increasing order of roll number.
3. both of the above
4. None of the above

✅ Correct Answer: 2

Command to increase the salary of all employees by 15000.(table name emp and column name sal)

1. update emp set sal = sal + 15000;
2. update emp set sal = 15000;
3. update set sal = sal + 15000;
4. None of the above

✅ Correct Answer: 1

By default data is arranged in _____ order using order by clause.

1. Ascending
2. Descending
3. Primary Key
4. None of the above

✅ Correct Answer: 1

Which of the following is DML commands?

1. Insert
2. Update
3. Delete
4. All the above

✅ Correct Answer: 4

A ________ provides a systematic way of storing information into the database.

1. Report
2. Query
3. Formic
4. None of the above

✅ Correct Answer: 3

Which of the following act as an interface to view, enter and change data in database?

1. Report
2. Table
3. Query
4. Form

✅ Correct Answer: 4

A _______ helps to collect specific information from the pool of data.

1. Query
2. Report
3. Form
4. None of the above

✅ Correct Answer: 1

Which of the following is to be created first?

1. Report
2. Query
3. Form
4. Table

✅ Correct Answer: 4

Which of the following field is invalid for storing information of “Library” Table? b. c. d.

1. Cost
2. Booknumber
3. Authorname
4. Dateofbirth

✅ Correct Answer: 3

Which of the following is suitable to act as a primary key in table student?

1. Rollno
2. Name
3. Class
4. Section

✅ Correct Answer: 1

A foreign key is a reference of the ________ key in another table.

1. Alternate
2. Primary
3. Candidate
4. None of the above

✅ Correct Answer: 2

In a table we can have only ______ primary key.

1. 1
2. 2
3. 3
4. more than 3

✅ Correct Answer: 1