Tag: databases

Questions Related to databases

Concatenation operator is
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  1. +

  2. -

  3. ||

  4. *

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Correct Option: C

A Literal is enclosed in double quotes.
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  1. True

  2. False

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Correct Option: B

SQL is
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  1. Structured Query Language

  2. Standard Query Language

  3. System Query Language

  4. Simple Query Language

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Correct Option: A

Limiting the rows in a select statement for a specific condition is done by the clause
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  1. Distinct

  2. Projection

  3. Where

  4. All of the above

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Correct Option: C

Which is the function that records the current date?
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  1. Date

  2. Sysdate

  3. Current Date

  4. System Date

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Correct Option: B

What is the result of the query below? SELECT Stud_name, Rollnum FROM STUDENT WHERE stud_marks=(SELECT MIN (stud_marks) FROM STUDENT GROUPBY Rollnum);

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  1. It gives the name and marks of all the students.

  2. It does not return anything.

  3. It shows an error saying” INVALID SYNTAX ERROR”

  4. It shows an error saying” Single-row subquery returns more than one row

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Correct Option: D

Select ename from emp where ename =”Scott”; This select statement executes successfully.
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  1. True

  2. False

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Correct Option: B

What are SQL “SELECT” statement capabilities.
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  1. Projection

  2. Selection

  3. Join

  4. All of the above

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Correct Option: D

To select all the columns from a table EMP, which one of the following is TRUE?
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  1. Select all columns from EMP;

  2. Select distinct columns from EMP;

  3. Select * from EMP;

  4. All of the above

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Correct Option: C

Which is the command line tool to execute SQL Server Integration Services packages?
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  1. DTEXEC

  2. DTSEXEC

  3. SQLEXEC

  4. PSEXEC

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Correct Option: A