system() - accepts command as parameter, runs, and returns result
exec() - accepts command as parameter, runs, but does not return
Third tier deals with the database (1 front, 2 middle, 3 backend)
CRUD - Create, Read, Update, Delete
Syntax (Will be on the quiz)
- Don’t confuse POST and GET request
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- from where
- Know the difference between Table, Database, Column, and Value