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پایگاه داده - نمونه پرسشهای تکمیلی (2) :
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جهت دریافت پرسشهای تمرینی آزمون  به ادامه مطلب مراجه فرمایید:

1. What does SQL stand for?

Strong Question Language
Structured Query Language
Structured Question Language


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

OPEN
SELECT
GET
EXTRACT

3. Which SQL statement is used to update data in a database?

SAVE AS
SAVE
MODIFY
UPDATE

4. Which SQL statement is used to delete data from a database?

COLLAPSE
REMOVE
DELETE


5. Which SQL statement is used to insert new data in a database?

ADD RECORD
INSERT INTO
ADD NEW
INSERT NEW

6. With SQL, how do you select a column named "FirstName" from a table named "Persons"?

EXTRACT FirstName FROM Persons
SELECT FirstName FROM Persons
SELECT Persons.FirstName


7. With SQL, how do you select all the columns from a table named "Persons"?

SELECT *.Persons
SELECT Persons
SELECT * FROM Persons
SELECT [all] FROM Persons

8. With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" is "Peter"?

SELECT * FROM Persons WHERE FirstName LIKE 'Peter'
SELECT [all] FROM Persons WHERE FirstName LIKE 'Peter'
SELECT * FROM Persons WHERE FirstName='Peter'
SELECT [all] FROM Persons WHERE FirstName='Peter'

9. 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"?

SELECT * FROM Persons WHERE FirstName='%a%'
SELECT * FROmPersons WHERE FirstName LIKE '%a'
SELECT * FROM Persons WHERE FirstName='a'
SELECT * FROM Persons WHERE FirstName LIKE 'a%'

10. The OR operator displays a record if ANY conditions listed are true. The AND operator displays a record if ALL of the conditions listed are true

False
true


11. With SQL, how do you select all the records from a table named "Persons" where the "FirstName" is "Peter" and the "LastName" is "Jackson"?

SELECT * FROM Persons WHERE FirstName='Peter' AND LastName='Jackson'
SELECT FirstName='Peter', LastName='Jackson' FROM Persons
SELECT * FROM Persons WHERE FirstName LIKE 'Peter' AND LastName LIKE 'Jackson'


12. 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"?

SELECT LastName>'Hansen' AND LastName<'Pettersen' FROM Persons
SELECT * FROM Persons WHERE LastName>'Hansen' AND LastName<'Pettersen'
SELECT * FROM Persons WHERE LastName BETWEEN 'Hansen' AND 'Pettersen'


13. Which SQL statement is used to return only different values?

SELECT UNIQUE
SELECT DIFFERENT
SELECT DISTINCT


14. With SQL, how can you return the number of records in the "Persons" table?

SELECT COUNT() FROM Persons
SELECT COLUMNS() FROM Persons
SELECT COLUMNS(*) FROM Persons
SELECT COUNT(*) FROM Persons

15. With SQL, how can you delete the records where the "FirstName" is "Peter" in the Persons Table?

DELETE ROW FirstName='Peter' FROM Persons
DELETE FirstName='Peter' FROM Persons
DELETE FROM Persons WHERE FirstName = 'Peter'


16. How can you change "Hansen" into "Nilsen" in the "LastName" column in the Persons table?

UPDATE Persons SET LastName='Nilsen' WHERE LastName='Hansen'
MODIFY Persons SET LastName='Hansen' INTO LastName='Nilsen
UPDATE Persons SET LastName='Hansen' INTO LastName='Nilsen
MODIFY Persons SET LastName='Nilsen' WHERE LastName='Hansen'

17. With SQL, how can you insert "Olsen" as the "LastName" in the "Persons" table?

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


18. With SQL, how can you insert a new record into the "Persons" table?

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


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

SELECT * FROM Persons ORDER BY FirstName DESC
SELECT * FROM Persons SORT 'FirstName' DESC
SELECT * FROM Persons ORDER FirstName DESC
SELECT * FROM Persons SORT BY 'FirstName' DESC

20. Which SQL keyword is used to sort the result-set?

ORDER BY
ORDER
SORT
SORT BY




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