What is trigger in Salesforce?

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Tags

1. #inserted
2. #object
3. #before
4. #perform
5. #events
6. #records
7. #executes
8. #enable
9. #changes
10. #after
11. #salesforce
12. #script
13. #custom
14. #deleted
15. #specific
16. #triggers
17. #occur
18. #database
19. #language
20. #manipulation
21. #trigger
22. #actions