SQL Pro · TRANSACTION · SAVEPOINT · ROLLBACK

Protect an HR 4 change

Commit a correct change and undo only the incorrect step.

SQL Essentials

Unlock this exercise and continue the path.

Protect an HR 4 change is part of the complete programme: 20 lessons, 180 verifiable exercises and 8 published guided projects.

  • Complete content with explained examples
  • SQL simulator and expected result
  • Detailed answer, common mistakes and challenge
View SQL EssentialsI already have access
Six-month access, one-time payment and no automatic renewal.