SQL Server interview questions give you an overview of SQL Server which is an effective and widely utilized database management system (DBMS), widely employed in business and organizations to store, organize, manage, and access large volumes of data.

Based on SQL (Structured Query Language), which allows interaction with databases by retrieving information directly.

we will explore some key features and capabilities as well as interview questions/topics related to SQL Server in this blog perfect whether you are a newcomer to this technology or experienced professional looking forward to an interview involving it!

1.What is Microsoft SQL Server?

A relational database management system that supports the structured query language and comes with its implementation, the Transact SQL Server.

2.What are the key components of SQL Server?

Database engine, task scheduler, full-text search, VSS writer, analysis services (SSAS), reporting services (SSRS), and integration services (SS).

3.List out the operators used in SQL Server for handling and manipulating data?

Operators in SQL Server include arithmetic, assignment, bitwise, comparison, compound, logical, scope resolution, set, string concat, and aggregate function.

4.How to install SQL Server?

Install the SQL server, connect to it using SSMS (SQL Server Management Studio), and configure the desired options.

5.What is the purpose of set operators in SQL Server?

Set operators combine rows from two or more tables based on a related column.

6.Definethe pivot statement.

The pivot statement is used to rotate rows to column values and run aggregations when required on the remaining column values.

7.What does the SQL server offer?

A user-friendly platform that can be used on various operating systems, easy-to-use tools and connectors, and various features for database management.

8.What is a database management system (DBMS)?

A software application used to access, create, and manage databases.

9.What are the four main types of DBMS?

Hierarchical, network, relational, and object-oriented.

10.What is SQL?

A standard language for dealing with relational databases.

11.Explain the data manipulation language.

The data manipulation language commands are used to manipulate or retrieve data in databases based on specific requirements.

These commands include insert, update, delete, merge, select, cube, roll-up offset fetch top, and pivot.

12.List out the difference between comparison operators, compound operators, and logic operators in SQL Server.

Comparison operators are used for comparison operations such as greater than, less than, or equal to.

Compound operators perform compound operations such as addition, subtraction, multiplication, division, and modulus.

Logic operators are used to perform logical operations between values.

13.How does the throw block work in SQL Server?

The throw block is used to raise an exception and transfers execution to a catch block of the try-and-catch construct.

14.What is the syntax for exception handling in SQL Server?

The syntax for exception handling in SQL Server is as follows: begin try, several SQL statements, begin catch, and finally catch.

15.Give an example of exception handling in SQL Server?

One example of exception handling in SQL Server is using the throw clause to raise an exception and passing the control to another group of statements enclosed in the catch block.

For instance, if a record does not exist, the throw clause can be used to execute the statement.

16.What is the purpose of the try-and-catch block in SQL Server?

The try and catch block in SQL Server can be used to execute a statement that does not execute the try block.

17.Identify the difference between arithmetic and assignment operators in SQL Server?

Arithmetic operators perform mathematical operations such as addition, subtraction, multiplication, division, and moduli, while assignment operators assign values to variables.

18.What are the components of SQL Server architecture?

Server, relational engine, command parser, optimizer, query executor, and storage engine.

19.Tell about the role of the server in SQL Server architecture.

The server houses the SQL Services, the database, and the relational engine.

20.What are the four main categories of SQL commands?

Data definition language commands, data manipulation language commands, data control language commands, and transaction control language commands.

21.Explain the differences between union, intersect, and minus operators in SQL Server.

Union operators combine rows from both tables where there is no common value.

Intersect operators keep only the common rows in both tables.

Minus operators keep rows from the left table that are not present in the right table.

22.How can aggregate functions be used in SQL Server?

Aggregate functions can be used to calculate the average, count, min, and max values of a column.

23.What is the difference between a basic SQL Server installation and a custom installation?

A basic installation allows for default configuration, while a custom installation allows for customization based on specific needs.

24.Tell about the use of bitwise operators in SQL Server.

Bitwise operators are used to perform bitwise and exclusive operations.

25.What is the purpose of the like operator in SQL Server?

The like operator is used to perform pattern matching on a string.

26.Define the use of having clauses.

The having clause is used when the where keyword is not available in select statements.

For example, to count students from a specific city, the having clause can be used.

27.How do you use the insert command?

There are two ways to insert values: by specifying column names and column values, or by selecting all the values that need to be inserted.

To update data, you can use the update command, set student name and City values, and execute the statement again.

28.What is the purpose of using a query pane in SQL server databases?

To add or drop a table, or to rename a table or database.

29.How do I connect to a SQL Server?

Navigate to the SQL Server Management Studio from Windows Explorer and type in “SQL Server” followed by “Open”.

30.What is the difference between mixed code and Windows authentication mode in SQL Server?

In mixed code mode, both Windows authentication and SQL Server authentication can be used, while in Windows authentication mode, only Windows authentication is used.

Hope you had a good brush up on SQL Server Now it is time to give it a try with MCQs

1. What is a database management system (DBMS)?

A) A software application used to access, create, and manage databases

B) A style of predecessor and successor relationship, similar to a tree, where nodes represent records and branches represent fields

C) A structure that allows users to identify and access data about another piece of data in the database

D) A software that uses small individual software called objects, each containing a piece of data and instructions for actions to be done with the data

2. What are the four main types of DBMS?

A) Hybrid, Relational, Network, Object-oriented

B) Hierarchical, Relational, Network, Object-oriented

C) Predecessor, Successor, Object-oriented, Relational

D) Hybrid, Network, Object-oriented, Relational

3. In the context of SQL transaction control, if an error occurs during an operation, which TCL command will undo the changes made during the transaction?

A) COMMIT

B) SAVEPOINT

C) END TRANSACTION

D) ROLLBACK

4. What is Microsoft SQL Server?

A) A relational database management system that supports the structured query language and comes with its implementation, the Transact SQL Server

B) A software that uses small individual software called objects, each containing a piece of data and instructions for actions to be done with the data

C) A style of predecessor and successor relationship, similar to a tree, where nodes represent records and branches represent fields

D) A software application used to access, create, and manage databases

5. What SQL clause is specifically used when the WHERE keyword is unavailable in a SELECT statement to have condition-based outputs?

A) ORDER BY

B) GROUP BY

C) OFFSET

D) HAVING

6. What is the SQL Server architecture?

A) A style of predecessor and successor relationship, similar to a tree, where nodes represent records and branches represent fields

B) The server, relational engine, command parser, optimizer, query executor, and storage engine

C) A database engine, task scheduler, full-text search, VSS writer, analysis services (SSAS), reporting services (SSRS), and integration services (SS)

D) A software that uses small individual software called objects, each containing a piece of data and instructions for actions to be done with the data

7.What are the DCL commands used for in a database?

A) Inserting new data into the database

B) Processing batch of SQL statements

C) Creating stored procedures

D) Grant or revoke privileges to a user

8. In SQL, which command is utilized to join two tables based on a condition that matches values in both tables?

A) MATCH

B) INNER

C) EXCLUSIVE

D) LOOP

9.What is the use of a stored procedure in a database?

A) To revoke privileges granted to a user

B) To encapsulate specific business logic in an application

C) To handle exception handling in SQL Server

D) To merge two or more tables using a select statement

10.What programming construct is used to execute related MYSQL statements together in one unit?

A) Data definition language commands for table operations

B) Set operators for combining values from different tables

C) Exception handling with try-catch construct

D) Transaction control language commands – T-SQL

Conclusion:

SQL Server is an extremely versatile database management system used by businesses and organizations of all sizes.

Understanding its key features and capabilities as well as common interview questions and topics will allow you to prepare for an interview, demonstrate your knowledge to potential employers and remain competitive in the job market.

We hope that our blog has provided insightful tips that help advance your career success – regardless of whether being beginner or expert SQL Server professional!