Câu hỏi phỏng vấn Sql server tiếng anh

SQL Server interview quesons
Explain the use of keyword WITH ENCRYPTION. Create a Store Procedure with Encrypon.
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What is a linked server in SQL Server?
',)- )!.
/001
Features and concepts of Analysis Services
'110 )0!
111
 .
1
'-2
• 3
• 41
• ' )
• 1100001
• 1
What is Analysis service repository?
5-06
7'',)'
What is SQL service broker?
'.-0
71
/-/11
1-

-'.-0101
5/0
1
What is user de+ned datatypes and when you should go for them?
"81

0
82
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4098post_codechar 

What is bit datatype?
:;
Describe the XML support SQL server extends.
',)'<9=>52
 1?7)214 ?7)
/
 
 40
9?7)',)'',)?7)
• XML Views:1?7)1
• Creaon of XML Templates:11?7)
What is SQL Server English Query?
/1,1'
1-
',)
What is the purpose of SQL Pro+ler in SQL server?
',)8

/.0181/
1
What is XPath?
??7)
1?7)
@
What are the Authencaon Modes in SQL Server?
 #117 <#11=26#
 77<#11',)'11=2
',)
Explain Data De+nion Language, Data Control Language and Data Manipulaon Language.
!!81)<!!)=29',)8
2
 
 )
 ! 
 "%
  77%
 %7
!71)<!7)=29
2
 ')9
 %'9
 "!91
 !)
 7+
 ))
 ?)%)%
 ) A.)
!)<!)=29-31

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 +%
 B A
What are the steps to process a single SELECT statement?
'
 -
 /-

 ,13-118

1
 1
Explain GO Command.
+1',)C+
What is the signi+cance of NULL value and why should we avoid permi7ng null values?
%"))
-8D3EE
F/-
-%"))
What is the di8erence between UNION and UNION ALL?
"% %1"% %))51
UNION2')G4 7G;
"% %
')G4 7GH
UNION All2')G4 7G;
"% %))
')G4 7GH
What is use of DBCC Commands?
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2

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What is Log Shipping?
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10
I-)>12
.-11
I-
I-
What is the di8erence between a Local and a Global temporary table?
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Local Global
!1
1

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1
716 1
What is the STUFF and how does it di8er from the REPLACE funcon?

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<JJ0JJ0JJ=
<JJ0JJ0JJ=
#8KL)
D<JJ0M0>0JJ=
M>
What are the rules to use the ROWGUIDCOL property to de+ne a globally unique iden+er column?
@ #+"! ) 
N #+"!
What is the acons prevented once referenal integrity is enforced?
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• .-11
• 6
• 66-8

• 6
• 66-
What are the commands available for Summarizing Data in SQL Server?
3',)'2
 !1 'I
'"7 ' ')'"7<'=
;O
B+  ')B+<'=G'
;O
 "% 

') "%<P=;O
7? 

')7?<'=;O

7% 

')7%<'=;O
+ ".& 
SELECT ZIP,City FROM Emp
GROUP BY ZIP
!.& '
SELECT ZIP,City FROM Emp
ORDER BY City
List out the di8erence between CUBE operator and ROLLUP operator
!D". ))"2
".  ))"
61+ ".&
11

6+ ".&6
1131

11
1
8+ ".&+

1
What are the guidelines to use bulk copy ulity of SQL Server?
.-1',)'I
.-Q1
• %%'111
• %')1
• %')05
E2RES9

%'9@8
What are the capabilies of Cursors?
12
• 
• 8
• 18
• 3T
• -<=1
What are the ways to controlling Cursor Behavior?
H2
• 2!O010-9

• 2A' ))%'%'B1
81
What are the advantages of using Stored Procedures?
2
• 
• '@
• "+"I/
• 1$!
8/
• $-
• 1
• 
What are the ways to code e;cient transacons?
'Q12
• !-1
• +111
• 1
• 1

• -191
• 1-

• 1
What are the di8erences among batches, stored procedures, and triggers?
Batch Stored Procedure Triggers
1',)


11



61',)
6
1
6'

8
00
What security features are available for stored procedures?
'2
• +1
• +-

• 'U

• 

What are the instances when triggers are appropriate?

'2
• 1
• 
• 1
• 1
• 1
• ',)I11
What are the restricons applicable while creang views?
112
• 
• 
• 09
• %'G%"))'," !G!%41
• 
• 81'$7.%!%+1
•  #'0"% %0 0 !.&0!'%0 "%<P=0 7"0 7".&

What are the events recorded in a transacon log?
12
• .-'.-
• 1
• )8%)5
• !8-
• # ',)'
• 400

• )--/00
• 550
•  )!. )!.
• !7)

•  1
• '1I
• '11
• '
• '11',)'
• '1'
• 11
• ',)1',)
• "88
Describe when checkpoints are created in a transacon log.
11-2
• #-
• 1
• !8!
• ',)'
• ',)'-
• .--
De+ne Truncate and Delete commands.
TRUNCATE DELETE
1
1
1
"%-

1!
11

!1'
C
 "

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