SQL SERVER INTERVIEW QUESTIONS 2014 BOOKLET -10 By Mr.J.Venkatesan Prabu - Managing Director of Kaashiv Infotech

            

      SQL SERVER INTERVIEW QUESTIONS 2014- SET 10 By 
"Mr.J.Venkatesan Prabu" 

KAASHIV INFOTECH

     [ The  Asia, India & Tamil Nadu Book Of  Record Holders ]

                                                       

    SQL Server Interview Questions 2014

SQL  SERVER –Booklet 10

-         Gives you the interview tips for SQL Server

 SQL SERVER INTERVIEW QUESTIONS WITH ANSWERS 

1. When setting Replication, can you have Distributor on SQL Server 2005, Publisher on SQL Server 2008?

§  No you cannot have a Distributor on a previous version than the Publisher.

2. When setting Replication, is it possible to have a Publisher as 64 Bit SQL Server and Distributor or Subscribers as a 32 Bit SQL Server.

§  Yes it is possible to have various configurations in a Replication environment.

3. What is the difference between dropping a database and taking a database offline?

§  Drop database deletes the database along with the physical files, it is not possible to bring back the database unless you have a backup of the database. When you take a database offline, you the database is not available for users, it is not deleted physically, it can be brought back online.

4. Which autogrowth database setting is good?

§  Setting an autogrowth in multiples of MB is a better option than setting autogrowth in percentage (%).

5. What are the different types of database compression introduced in SQL Server 2008?

§  Row compression and Page compression.

6. What are the different types of Upgrades that can be performed in SQL Server?

§  In-place upgrade and Side-by-Side Upgrade.

7. What is Transparent Data Encryption?

§  Introduced in SQL Server 2008 Transparent Data Encryption (TDE) is a mechanism through which you can protect the SQL Server Database files from unauthorized access through encryption. Also, TDE can protect the database backups of the instance on which TDE was setup.

8. Does Transparent Data Encryption provide encryption when transmitting data across network?

§  No, Transparent Data Encryption (TDE) does not encrypt the data during transfer over a communication channel.

9. What are the operating modes in which Database Mirroring runs?

§  Database Mirroring runs in 2 operating modes High-Safety Mode and High-Performance Mode.

10. What is the difference between the 2 operating modes of Database Mirroring (mentioned in above answer)?

§  High-Safety Mode is to ensure that the Principal and Mirrored database are synchronized state, that is the transactions are committed at the same time on both servers to ensure consistency, but there is/might be a time lag.

§  High-Performance Mode is to ensure that the Principal database run faster, by not waiting for the Mirrored database to commit the transactions. There is a slight chance of data loss and also the Mirrored database can be lagging behind (in terms being up to date with Principal database) if there is a heavy load on the Mirrored Server.

11.What is Log Shipping?

§  Log shipping is the process of automating the backup of database and transaction log files on a production SQL server, and then restoring them onto a standby server. Enterprise Editions only supports log shipping. In log shipping the transactional log file from one server is automatically updated into the backup database on the other server. If one server fails, the other server will have the same db and can be used this as the Disaster Recovery plan. The key feature of log shipping is that it will automatically backup transaction logs throughout the day and automatically restore them on the standby server at defined interval.

12. Name 3 ways to get an accurate count of the number of records in a table?

SELECT * FROM table1
SELECT COUNT(*) FROM table1
SELECT rows FROM sysindexes WHERE id = OBJECT_ID(table1) AND in did < 2

13. What are the different data types available in SQL Server?

Numeric: Stores numeric values.
Monetary: It stores numeric values with decimal places. It is used specially for currency values.
Data and Time: It stores date and time information.
Character: It supports character based values of varying lengths.
Binary: It stores data in strict binary (0 or 1) Representation.
Special purpose: SQL Server contains Complex data types to handle the XML Documents, Globally unique identifiers etc.

14. What are the specialized data types in SQL Server?

bit :Stores a 0, 1, or null. Used for basic “flag” values.
TRUE is converted to 1, and FALSE is converted to 0.

Timestamp: An automatically generated value. Each database contains an internal counter that designates a relative time counter not associated with an actual clock. A table can have only one time stamp column, which is set to the database timestamp when the row is inserted or modified.

Uniqueidentifier: A 16-bit GUID used to globally identify a row across databases, instances, and servers.

sql_variant: It can change the data type based on the data that is stored within it.

Cursor: Cursor is used by applications that declare cursors. It contains a reference to the cursor that can be used for operations. This data type cannot be used in a table.

Table: It is used to hold a result set for subsequent processing. This data type cannot be used for a column. The only time you use this data type is when declaring table variables in triggers, stored procedures, and functions.

Xml: It stores an XML document of up to 2 GB in size. You can specify options to force only well-formed documents to be stored in the column.

15. Which of the following has the highest order of precedence?

·         Functions and Parenthesis

·         Multiplication, Division and Exponents

·         Addition and Subtraction

·         Logical Operations

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Day	Programme
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Day 5	CCNA (-Networking-Router Configurations Practical Demo)

INPLANT TRAINING SCHEDULE FOR ELECTRONIC/ELECTRICAL/EIE STUDENTS

Day	Programme
Day 1	Embedded System  (Embedded Program Designing ,Chip Burning)
Day 2	Wireless System  (Device Designing,Controlling Fans with Wireless Sensors)
Day 3	CCNA  (-Networking-Router Configurations Practical Demo)
Day 4	Ethical Hacking  (Facebook Hack,Server/Website Hacking(20 Attacks)
Day 5	Matlab  (Capture Image,Processing, Animate Images-Practical Demos)

Mechanical/Civil Inplant training Schedule

Day	Programme
Day 1	Aircraft Designing
Day 2	Vehicle Movement in Airports
Day 3	3D Packaging Designs
Day 4	3D Modeling
Day 5	3D Window Shading

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