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databases Online Quiz - 213

Description: databases Online Quiz - 213
Number of Questions: 20
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Tags: databases
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1)Which function is used to get the Current System Date and Time

technology databases

  1. GetSystemDate()

  2. GetDate()

  3. GetCurrentDateTime()

  4. None

Show answer
Correct Option: B

What will be the Output for the Below Query Select * from Retailer where rtrid = (select top 3 Rtrid from retailer)

technology databases

  1. Return Top 3 Row in the Retailer Table

  2. Return Error

  3. Return No Record

  4. Return all Records from Retailer Table

Show answer
Correct Option: B

Which function is used to get the Current System Date and Time

technology databases

  1. GetSystemDate()

  2. GetDate()

  3. GetCurrentDateTime()

  4. None

Show answer
Correct Option: B

What will be the Output for the Below Query

technology databases

  1. Return Top 3 Row in the Retailer Table

  2. Return Error

  3. Return No Record

  4. Return all Records from Retailer Table

Show answer
Correct Option: B

How many Primary Key can be set for an table
technology databases

  1. 10

  2. 1

  3. 2

  4. Infinite

Show answer
Correct Option: A

What will be the Output for Select Abs(25-45)

technology databases

  1. Abs is not a recognized function name

  2. -20

  3. 20

  4. None

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Correct Option: C

Which of the joins are available in SQL i) Inner Join ii) Left Outer Join iii) Cross Join iv) Self Join

technology databases

  1. All the Above

  2. i) and ii)

  3. i), ii) and iii)

  4. None

Show answer
Correct Option: A

How many Output Parameters can be set for an Stored Procedure

technology databases

  1. One

  2. More than One

  3. None

  4. Stored Procedure Does not support Output Parameter

Show answer
Correct Option: B

A User Defined Function can Return

technology databases

  1. One Value

  2. More than One Value

  3. No Value

  4. User Defined Function will not return Value

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Correct Option: B

A Trigger can be for

technology databases

  1. Stored Procedure

  2. Function

  3. Table

  4. View

Show answer
Correct Option: C

Which of the following is not a group function?

technology databases

  1. Min( )

  2. Sqrt( )

  3. Sum( )

  4. max( )

Show answer
Correct Option: B

Which SQL statement is used to extract data from a database?

technology databases

  1. Open

  2. Get

  3. Extract

  4. None of the Above

Show answer
Correct Option: C
  1. With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" starts with an "a"?
technology databases

  1. SELECT * FROM Persons WHERE FirstName='%a%'

  2. SELECT * FROM Persons WHERE FirstName='a'

  3. SELECT * FROM Persons WHERE FirstName LIKE '%a'

  4. SELECT * FROM Persons WHERE FirstName LIKE 'a%'

Show answer
Correct Option: D
  1. With SQL, how do you select all the records from a table named "Persons" where the "FirstName" is "Peter" and the "LastName" is "Jackson"?
technology databases

  1. SELECT * FROM Persons WHERE FirstName<>'Peter' AND LastName<>'Jackson'

  2. SELECT FirstName='Peter', LastName='Jackson' FROM Persons

  3. SELECT * FROM Persons WHERE FirstName='Peter' AND LastName='Jackson'

  4. None

Show answer
Correct Option: C
  1. With SQL, how do you select all the records from a table named "Persons" where the "LastName" is alphabetically between (and including) "Hansen" and "Pettersen"?
technology databases

  1. SELECT * FROM Persons WHERE LastName>'Hansen' AND LastName

  2. SELECT * FROM Persons WHERE LastName BETWEEN 'Hansen' AND 'Pettersen'

  3. SELECT LastName>'Hansen' AND LastName

  4. None

Show answer
Correct Option: B
  1. Which SQL keyword is used to sort the result-set? SORT BY ORDER BY SORT ORDER
technology databases

  1. SORT BY

  2. ORDER BY

  3. SORT

  4. ORDER

Show answer
Correct Option: B

AI Explanation

To answer this question, you need to understand SQL queries and the keyword used to sort the result-set.

Option A) SORT BY - This option is incorrect because there is no such keyword in SQL.

Option B) ORDER BY - This option is correct. The "ORDER BY" keyword is used in SQL to sort the result-set in ascending or descending order based on one or more columns.

Option C) SORT - This option is incorrect because there is no "SORT" keyword in SQL.

Option D) ORDER - This option is incorrect because "ORDER" alone is not a valid keyword to sort the result-set in SQL.

The correct answer is B) ORDER BY. This option is correct because "ORDER BY" is the keyword used in SQL to sort the result-set.

  1. With SQL, how can you return all the records from a table named "Persons" sorted descending by "FirstName"?
technology databases

  1. SELECT * FROM Persons SORT BY 'FirstName' DESC

  2. SELECT * FROM Persons SORT 'FirstName' DESC

  3. SELECT * FROM Persons ORDER BY FirstName DESC

  4. SELECT * FROM Persons ORDER FirstName DES

Show answer
Correct Option: C
  1. With SQL, how can you insert a new record into the "Persons" table?
technology databases

  1. INSERT VALUES ('Jimmy', 'Jackson') INTO Persons

  2. INSERT ('Jimmy', 'Jackson') INTO Persons

  3. INSERT INTO Persons VALUES ('Jimmy', 'Jackson')

  4. None

Show answer
Correct Option: C
  1. With SQL, how can you insert "Olsen" as the "LastName" in the "Persons" table?
technology databases

  1. INSERT INTO Persons ('Olsen') INTO LastName

  2. INSERT ('Olsen') INTO Persons (LastName)

  3. INSERT INTO Persons (LastName) VALUES ('Olsen')

  4. None

Show answer
Correct Option: C
  1. With SQL, how can you delete the records where the "FirstName" is "Peter" in the Persons Table?
technology databases

  1. DELETE ROW FirstName='Peter' FROM Persons

  2. DELETE FROM Persons WHERE FirstName = 'Peter'

  3. DELETE FirstName='Peter' FROM Persons

  4. None

Show answer
Correct Option: B

AI Explanation

To delete records where the "FirstName" is "Peter" in the Persons Table, you would use the DELETE statement with the WHERE clause to specify the condition.

Let's go through each option to understand why it is correct or incorrect:

Option A) DELETE ROW FirstName='Peter' FROM Persons - This option is incorrect because the correct syntax is DELETE FROM, not DELETE ROW. Additionally, the WHERE clause is missing.

Option B) DELETE FROM Persons WHERE FirstName = 'Peter' - This option is correct. The DELETE statement is used to delete records from a table, and the WHERE clause is used to specify the condition. In this case, it is deleting records where the "FirstName" is "Peter" from the "Persons" table.

Option C) DELETE FirstName='Peter' FROM Persons - This option is incorrect because the correct syntax is DELETE FROM, not DELETE. Additionally, the WHERE clause is missing.

Option D) None - This option is incorrect because there is a correct option.

The correct answer is B. This option is correct because it uses the correct syntax with the DELETE statement and the WHERE clause to delete records where the "FirstName" is "Peter" from the "Persons" table.

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