Sql dba Interview Questions

Fill Factor is a setting that is applicable to Indexes in SQL Server. The fill factor value determines how much data is written to an index page when it is created/rebuilt. Your role and responsibilities carried out in your earlier projects would be of significance to the potential employer. This is the answer that lets the interviewer know how suitable are you for the position to which you are being interviewed.

You must also prepare the below questions along with improving your technical skills if you are looking for a job change. Interviewers ask a lot of other non-technical questions to evaluate your qualities like I just mentioned above .

What is the use of FOR Clause?

Sql supports data type called table which is used here for returning a table. One-to-Manyrelationships are implemented by splitting the data into two tables with primary key and foreign key relationships. SQL Server-based cursors are used when you wish to work on a record at any instance of time, rather than taking all the how to become a sql server dba data from a table as a bulk. However, cursors are not preferred to be used when large volumes of data is present as it affects performance. In a scenario, where it is not possible to avoid cursors, then try to reduce the number of records to process by using a temporary table and then eventually build the cursor from this.

Functions take one mandatory input parameter while stored procedures may take 0 to n input parameter. 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.

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This will ensure the integrity of the database hosted on secondary replica only. This execution will not guarantee the integrity of the database hosted on a primary replica as https://remotemode.net/ a primary replica uses a different set of storage systems to host their databases. We can get this information by accessing a dynamic management view sys.availability_groups.

Hotfixs are software patches that were applied to live i.e. still running systems. A hotfix a single, cumulative package that includes one or more files that are used to address a problem in a software product (i.e. a software bug). When any modification occurred (INSERT/DELETE/UPDATE) on source database, all modified pages are copied to the sparse file before the actual modification. That means the sparse file contains the old/point in time data . From time to time recover the databases to a specific point of time, as per the requests. The original SQL Server code was developed in the 1980s by the former Sybase Inc., which is now owned by SAP. Sybase initially built the software to run on UNIX systems and minicomputer platforms.