How to set check constraints in SQL Server.

To set a check constraint in SQL Server, follow these steps: 1. Open SQL Server Management Studio (SSMS) and connect to the SQL Server database. 2. In Object Explorer, expand the database node, then expand the table node. 3. Locate the table where you want to set the check constraint, and right-click on the table. 4. From the right-click menu, choose the “Design” option to open the table designer. 5. In the table designer, select the “Constraints” tab. 6. On the Constraints tab, locate the “Check Constraints” section, then click the “Add” button. 7. In the “Add Check Constraint” dialog, enter the constraint name and the constraint condition. The constraint condition should be a valid SQL statement that checks the required condition. 8. Click the “OK” button to add the check constraint. 9. Save the changes to the table, close the table designer. Now, the table will have the check constraint set, enforcing the constraint condition and preventing the insertion or updating of data that does not meet the condition.