SQL Server Interview Questions And Answers For Experienced

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Sql Server Interview Questions And Answers For Experienced
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1. Most SQL theory interview questions revolve around these topics:

Indexes
Partitions
Normalization
ACID transactions
Types of keys in databases and their significance
Differences between SQL and No-SQL databases
SQL and No-SQL databases application real-life examples
A real-life design problem like a Bank, School etc.

2. Questions around SQL queries revolve around:

GROUP BY and HAVING usage
Aggregate functions
Cursors
Nested queries

3.n What is an Operator?
˜ Operators are a means by which SQL can manipulate numbers and strings or test for equality

n Four types of Operator
˜ Arithmetic
˜ Range
˜ Equality and
˜ Logical

3.What is BCP? When is it used?

It is a tool used to duplicate enormous quantity of information from tables and views. It does not facsimile the structures same as foundation to target. BULK INSERT command helps to bring in a data folder into a record, table or view in a user-specific arrangement.

4.When is the UPDATE_STATISTICS command used?

This command is used, ones the processing of large data is done.
When we delete a large number of files, alteration or reproduction takes place in the tables, to be concerned of these changes we need to restructure the indexes This is done UPDATE_STATISTICS.

5.Explain the steps needed to Create the scheduled job?

Steps to create a Scheduled Job:

1.Connect to the database of SQL server in SQL Server Management Studio. On the SQL Server Agent, we will find a Jobs folder.
2.Right click on jobs and choose Add New.
3.A New Job window will come into view. Give an associated name for the same.
4.Click next on the “Steps” in the left list of options. An SQL job can have multiple steps either in the form of SQL declaration or a stored practice call.
5.Click on the “Schedules” in the left list of options. An SQL job can comprise of one or supplementary schedules. It is basically the instance at which SQL job will jog itself. We can spell out returning schedules also.

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