Top 50 SQL Server DBA Interview Questions and Answers 2022

Row mode execution is very efficient for OLTP workload but it will not give adequate results if you have to process a large number of rows. Parameter sniffing could be another aspect of query regression. We can analyze it using the Query store and fix it by recompiling the impacted object or performing update statistics on the impacted objects. We will gather SQL Server wait types to analyze what was the issue where is most of the resources were waiting. We can also exclude network-related possibilities by looking into network dashboards or engaging a network administrator to ensure everything is fine from their end. Gather all details about dependencies of this database like linked server, Jobs, logins, reports, replication, auditing, etc. Once all planning is done then the Migration phase will start where we need to perform actual migration based on the decision, we have made in the pre-migration phase.

I have listed all the series in this post so that it can be easily downloaded and used. All the questions are collected and listed in one PDF which is here to download.

List out some of the requirements to set up a SQL Server failover cluster?

Now check all the columns in the “Allow Nulls” option that should have a Null Value. Click on the Set Primary Key toolbar button to set the StudId column as the primary key column. Copy and paste the code into the new Query Editor window, then execute it. Master Data Maintenance Master Data Manager is more than a place to define model objects. It also allows you to create, edit, and update leaf members and consolidated members. When you add a leaf member, you initially provide values for only the Name and Code attributes, as shown in Figure 7-4. You can also use a search button to locate and select the parent consolidated member in each hierarchy.

Write a query to fetch all the records from the EmployeeInfo table ordered by EmpLname in descending order and Department in the ascending order. Write a query to retrieve the EmpFname and EmpLname in a single column as “FullName”. The first name and the last name must be separated with space. Write a query to create a new table which consists of data and structure copied from the other table.

Learn How To Use CASE Statement In SQL

With that sub query result, Main query will be executed. Local temporary tables are visible when there is a connection, and are deleted when the connection is closed. SQL Profiler is a tool which allows system administrator to monitor events in the SQL server.

Next, we can engage the application team for their analysis of whether they have applied any changes at the application or web layer that is resultant in poor response time. Here we need to closely work with the development team or application team. Blocking issues can be addressed with the help of the application team whether to kill it or let it run based on the nature of transactions. Finalize your migration approach considering the cutover time window. Ensure to create run books and documents which will be followed during the actual migration. These data files are logically divided into Pages in sequence order. All reads and writes operations are performed at a page level so we can say actual data is stored in SQL Server on Pages inside these data files.

How to get started with 3D development in the modern front end

SQL Server Database Administrators, also called Server DBAs, are responsible for the design, maintenance, security, memory, and support of SQL Server Databases. SQL Server DBA interview questions are asked in both fresher and experienced programmers’ SQL interviews. If you’re getting ready for an upcoming SQL interview, going how to become a sql server dba over these SQL Server DBA interview questions and answers can help you ace it. Data is getting bigger day by day, and it has a significant role in decision-making. To handle this data, there is a need for a database and database management system. One of the most popular database management systems is MS SQL Server.

• The model database, as its name implies, serves as the model for all databases created on the same instance.
• The above SQL server DBA interview questions will help you prepare thoroughly for your upcoming SQL or software engineering interview.
• The benefits derived from triggers are based on their event-driven nature.
• Typically, named pipe connections over NetBEUI will time out quickly.

To use the logical operator in comparing values from the columns. Now we’ll create a table in the CSharpCornerDB database. A Clustered Index sorts and stores the data in the table based on keys.

The owner might also want to see the performances in a particular quarter of a year. What could be better than a beautiful and detailed visualization for this? It will help us visualize data, meeting our requirements. In SQL Server, COALESCE function returns the first non-null value from a list. If all the values evaluate to null then it will also return null.