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Microsoft SQL Server Interview Questions and Answers
If you received a "Performance Critical" status in
the SQL Server 2005 replication monitor, what does this
mean?
The latency between transaction commits at the publisher
and subscriber exceeds the warning level.
This status can actually mean two different things.
Either the latency between the commit of a transaction
at the publisher and the same commit at the subscriber
is exceeding some level in a transactional level or not
enough rows are being processed in a merge replication
scenario.
Which of the following modules within SQL Server 2005
cannot be signed with a digital signature?
DDL triggers
DDL triggers cannot be signed, but all the other objects
can.
What does this return?
declare @i int
select @i = -5
select +@i
-5
This will return -5 as the result. The + operator
functions as a unary plus operator, which means that it
performs no operation on the value it preceeds.
You have installed a US English SQL Server 2000 instance
with the default options, collation, and sorting. What
does this return:
create table MyTable
( Mychar varchar(20))
go
insert Mytable select 'Apple'
insert Mytable select 'ant'
insert Mytable select 'Ball'
go
select * from MyTable where Mychar like '[^a]%'
Ball
This should return "Ball" only since the ^ operator
means not matching the next character. In this case, the
first character should not be an "A".
Where does Profiler store its temporary data in SQL
Server 2005?
In the directory stored in the system variable TEMP.
Profiler uses the location specified for the TEMP system
variable.
What is the Service Broker Identifier ?
A GUID that identifies the database on which Service
Broker is running.
Each database has a Service Broker identifier. This is a
GUID in the service_broker_GUID column that identifies
the databases on which Service Broker is running. It
ensure that messages are delivered to the right
database.
You are looking to import a large amount of data from a
remote OLEDB data source that is not a text file. Which
of the following techniques can you use?
Use the select * from OPENROWSET(BULK...) command.
SQL Server 2005 includes a new option with the
OPENROWSET command for getting large amounts of data
from an OLEDB data source. It is the BULK option and
works similar to the BULK INSERT command.
How are modified extents tracked in SQL Server 2005
(which internal structures)?
Differential Change Map and Bulk Change Map
There are two internal structures that track extents
modified by bulk copy operations or that have changed
since the last full backup. They are the Differential
Changed Map (DCM) and the Bulk Changed Map (BCM).
What does this return?
select (1324 & 1024)
1024
This performs a bitwise AND operation between the two
integers and sets the result to this. Since 1024 is a
single set bit in it's value, if the corresponding bit
is set to 1, then in the result the bit is set to 1. In
this case, since no other bits would generate two 1s,
the result is equivalevt to the mask, or 1024.
What does the Log Reader agent in SQL Server 2005
replication do?
This agent reads the publisher log for transactions to
send to the distributor.
This agent is tasked with reading the transaction log in
transactional replication and moving those transactions
that need to be replicated to the distributor.
You are performing an update of your Scalable Shared
Database and receive note that two reports run at the
same time received different results. These reports were
both run during your update. What type of update did you
perform?
A rolling update
When performing a rolling update, doing the detach and
attach on each server as opposed to detaching from all
then attaching to all, it is possible that different
reporting servers will display different results.
What does a @@fetch_status of -2 mean in SQL Server
2005?
The row being fetched is missing.
This means that the row that was being fetched from the
cursor is missing.
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