SQl(MSSQL/SSQL)

 1. sqltutorial 2. javatpoint 3. programiz 4. mode 5. tutorialspoint 6. w3schools

 1.SQL Database 2.SQL Tables 3.SQL Queries/Modifying Data 4.Filtering Data 5.SQL Joins/Joining Multiples Tables 6.SQL Keys/Constraints 7.Grouping Data 8.Sorting Data 9.Aggregate Functions 10.SET Operators 11.Subquery 12.Conditional Expressions TutorialLink

 1.Right click on the Database to take Backup 2.Select Tasks and Select Back up 3.Now click on Add and click on (...) then Select folder and give File Name with extension .bak  (Ex: filename.bak) 4.Click on  OK and Click on OK