Question: 1 . Name three database models. 2 . Who introduced the relational database model? 3 . What is MySQL ? 4 . What is the

1. Name three database models.
2. Who introduced the relational database model?
3. What is MySQL?
4. What is the command used to retrieve records in MySQL?
5. What is the command used to add records in MySQL?
6. What is the command used to delete records in MySQL?

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