Top 45 SQL Server Interview Questions 2023

If you need help with any SQL Server Performance Tuning Issues, please feel free to reach out at I guess the title says all – Interview is the moment of life. Architecture of SQL Server Reporting Services The following diagram shows the architecture of SQL Server Reporting Services. Tools and Components of SQL Server Reporting Services architecture This architecture consists mainly of the following types of components and tools.

However, the first three types are only frequently used, where “NF” stands for normal form. The originator of the RD model “E.F Codd” has proposed the process “normalization” with the first “normal form” and continued till third normal form. Pinal Daveis an SQL Server Performance Tuning Expert and independent consultant with over 17 years of hands-on experience. He holds a Masters of Science degree and numerous database certifications. Paras Doshi has submitted 21 interesting question and answers for SQL Azure.

What is the difference between SQL and PL/SQL?

This question is your opportunity to show the interviewer that you have the skills and abilities needed for this role. You can answer by identifying a skill from the job description, such as SQL programming or database management, and explaining why it’s important. This question can help interviewers understand your experience with a specific type of database. You can use this opportunity to explain any previous experience you have working with cluster databases and how it helped you complete your work.

• Parameter sniffing could be another aspect of query regression.
• The owner might also want to see the performances in a particular quarter of a year.
• You can highlight a specific experience you had with data migration and how it helped your organization or company.
• We can also create a Not Null constraint in Microsoft SQL Server without execution of a SQL query.

You can answer by listing some of the most important skills and explaining why they are so vital to a successful career as a SQL database administrator. This question is an opportunity to show your knowledge of the different types of database management systems and how they work. You can list the different types of database management systems, such as relational databases, object-oriented databases and NoSQL databases.

What is recursive stored procedure?

A Clustered Index can be defined only once per table in the SQL Server Database, because the data rows can be sorted in only one order. Text, nText and Image data are not allowed as a Clustered index.

• There seemed to be a few questions that would come up repeatedly for almost everyone.
• Comparing all original values of every column in a row on every UPDATE or DELETE may be performed instead of verifying the TIMESTAMP column has not changed.
• There is no difference between primary key and unique key but, a unique key will allow single NULL, but in the primary key, no NULL is accepted.
• Ahotfixis a single, cumulative package that includes one or more files used to address a problem in a software product (i.e., a software bug).
• He prides himself on his ability to turn any idea into a good specification.

Basic availability groups replace database mirroring features. It provides us to maintain a single secondary how to become a sql server dba replica. Below is its main limitation when we compare it with standard availability groups.

What is lazy writer.?

Several indexes are specifically created considering the nature of the database. You need to evaluate your query and requirement before recommending any index creation.