SQL Data Types Questions and Answers

SQL Data Types MCQs : This section focuses on the "Data Types" of the SQL. These Multiple Choice Questions (mcq) should be practiced to improve the SQL skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

1. What is the maximum value that can be stored in NUMERIC(4,2)?

A. 9999.99
B. 99.9999
C. 99.99
D. 9.99

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2. Determine data type for the given column? Column Name: Price ; Description: Cost of an item in rupees and paise ; Example: 200.21

A. VARCHAR2(50)
B. NUMBER
C. NUMBER(5,2)
D. NUMBER(6)

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3. Determine data type for the given column? Column Name: IFSC_Code ; Description: A 11 Character alphanumeric code that identifies a bank branch ; Example: SBIN0009044

A. VARCHAR2(50)
B. NUMBER
C. Char(11)
D. NUMBER(11)

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4. Determine the most suitable data type for the given column? Column Name: Profile_Image ; Description: Image of the employee

A. Clob
B. Blob
C. Varchar(100)
D. None of the above

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5. The user defined data type can be created using

A. Create datatype
B. Create data
C. Create definetype
D. Create type

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6. In contemporary databases, the top level of the hierarchy consists of ______ each of which can contain _____

A. Catalogs, schemas
B. Schemas, catalogs
C. Alter typeEnvironment, schemas
D. Schemas, Environment

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7. Choose the most suitable data type in case multiple data types are possible for the column. Column Name: PIN_Code ; Description: Six digit numeric PIN code for any address in India ; Example: 560100

A. Integer
B. VARCHAR2(11)
C. CHAR(11)
D. Number(6)

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8. Choose the most suitable data type in case multiple data types are possible for the column. Column Name: Student_id ; Description: Unique number assigned to every Student ; Example: 100000

A. Integer
B. VARCHAR2(11)
C. CHAR(11)
D. Number(6)

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9. Choose the most suitable data type in case multiple data types are possible for the column.Column Name: Date_Of_Birth ; Description: Date of Birth of the employee ; Example: 1990/01/01

A. Timestamp
B. VARCHAR2(11)
C. Blob
D. Date

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10.  SQL allows comparison operations on the data types i.e.

A. Date
B. Timestamp
C. Time
D. All of the above

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