SQL Server DBA Essentials for beginners

About SQL Server DBA Essentials for beginners

SQL Server is a relational database management system (RDBMS)from Microsoft that's designed for the enterprise environment. A DBA ( Database administrator) has to perform several responsibilities to ensure the smooth running of the SQL sever database. Some of the key daily responsibilities of a SQL Server DBA includes:

Backups

Confirm that backups have been made and successfully saved to a secure locationCheck the backup failure alerts, correct the errors and rerun the backupsReview the average duration of backup, any significant changes occurred investigates on this.Most of the time it happens due to networking low bandwidthValidate the backup files using restore verify only. Jobs can be created to take care of the task and to send a notification if it fails to verify any backup.

Performance

Regularly monitor and identify blocking issues. Check Performance counters on all production servers and verify that all counters are within the normal range. Throughout the day, periodically monitor performance by collecting relevant dataCreate indexes to reduce the time it takes to get responses from the SQL Server after a T-SQLscript is executed.

Security

Check the auditing logs for failed logins and notify the audit team if necessaryImplement relevant permissions to prevent authorised access to SQL Server databases

T-SQL ( Transact -SQL )

Transact-SQL is central to using SQL Server. All applications that communicate with an instance of SQL Server do so by sending Transact-SQL statements to the server, regardless of the user interface of the application. T-SQL is Microsoft's proprietary version of the standard SQL(Structural Query language) Using T-SQL you can communicate with SQL Servers to perform task like: Retrieving data from the databaseUpdating informationInserting data into databasesDeleting dataDropping a Table or database