SQL Server DBA Interview questions and answers
This question can help the interviewer assess your knowledge of database backup procedures. Your answer should include a specific time frame and an explanation of why this is important to maintain data security. This question is an opportunity https://remotemode.net/ 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.
FOR clause is mainly used for XML and browser options. This clause is mainly used to display the query results in XML format or in browser. Multiple column sub query which returns multiple columns to the main query. With that sub query result, Main query will be executed.
What are TCL Commands? and List down the TCL Commands available on SQL Server?
The international developer community has constantly backed it. PostgreSQL has achieved significant appeal among developers because to its fault-tolerant characteristics. A relational database management system is a type of database management system that stores data in a row-based table structure that links related data components. An RDBMS contains functions that ensure the data’s security, accuracy, integrity, and consistency. This is not the same as the file storage utilized by a database management system.
- There can be only one Primary data file and multiple secondary data files as long as the total # of files is less than 32,767 files.
- An inner join (sometimes called a “simple join”) is a join of two or more tables that returns only those rows that satisfy the join condition.
- The right outer join displays all the rows from the second table and matching rows from the first table.
- There may be times when a table has several duplicate records.
- DML – Data Manipulation Language deals with the manipulation of data present in the database.
It is often considered as one of the High-Availability options. One of the advantages of Replication is that it can be configured on databases that are in a simple recovery model. 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. Maintenance how to become a sql server dba commands are those commands that allow the DBA to perform maintenance activities on the database such as shrinking a file. SQL profiler is the SQL Server utility you can use to trace the traffic on the SQL Server instance. Traces can be filtered to narrow down the transactions that are captured and reducing the overhead incurred for the trace.
If it is, complete more research to demonstrate your high level of interest. Be ready to discuss your experiences supporting operations across departments. Have examples ready where your interpersonal skills in working with software developers, business analysts, executives, vendors, and external customers were key.
For the sake of example, we assume there is a table with name Employee and columns ‘ID’ and ‘Name’. SQL Server Reporting Services is a set of tools that helps in generating reports. Businesses can use it for getting visual insights into data. A function in SQL Server is a group of statements that might take input, perform some task and return a result. You can choose an authentication mode by changing Server Authentication on Security page in Properties of SQL Server Management Studio. User Names and Passwords are stored in sys.server_principals and sys.sql_logins.
Q11.What is an Azure virtual machine?
A database transaction occurs when data in a database is changed, inserted, deleted, or queried. Now, this column does not allow null values and duplicate values. You can try inserting values to violate these conditions and see what happens. Do you believe that you have the right stuff to be a section in the advancement of future SQL Server DBA, the GangBoard is here to control you to sustain your vocation. Various fortune 1000 organizations around the world are utilizing the innovation of SQL Server DBA to meet the necessities of their customers. SQL Server DBA is being utilized as a part of numerous businesses.
Mention a query that returns the list of triggers in a database. CDC is termed as “Change Data Capture.” It captures the recent activity of INSERT, DELETE, and UPDATE, which are applied to the SQL Server table. It records the changes made in the SQL server table in a compatible format.
The SQL Server agent plays a vital role in day to day tasks of SQL server administrator. Server agent’s purpose is to implement the tasks easily with the scheduler engine which allows our jobs to run at scheduled date and time. Manvendra is a database enthusiast, currently working as a Senior Architect at one of the top MNC. Yes, SQL Server replication can be used to publish data from SQL Server to Oracle or Oracle to SQL Server. You can change to the desired value there and click OK to save the changes.
- SQL clause helps to limit the result set by providing a condition to the query.
- A clause helps to filter the rows from the entire set of records.
- Or, you can create a database using the SQL Server Management Studio.
- TABLESAMPLE is used to extract sample of rows randomly that are all necessary for the application.