Vet clinic database: add 'join table' for visits

[K0ppai]

Dear Reviewers,
I've worked on the following in this pull request,

1. Create a table named vets
2. Create a "join table" called specializations
3. Create a "join table" called visits
4. Insert the required data for vets
5. Insert the required data for specializations
6. Insert the required data for visits
7. Write queries to answer questions

Screenshot of the queries' results

[AbelG101]

Hi @K0ppai 👋,

Your project is complete! There is nothing else to say other than... it's time to merge it.
Congratulations! 🎉 🥳🥇

Highlights

• DB Schema is properly updated with new tables ✔
• All data is correctly added ✔
• Great query organization ✔
• Correct use of Git Flow ✔
• Descriptive PR title with a great summary ✔

Optional suggestions

• N/A

Every comment with the [OPTIONAL] prefix won't stop the approval of this PR. However, I strongly recommend you take them into account as they can make your code better. Some of them were simply missed by the previous reviewer and addressing them will really improve your application.

Cheers and Happy coding!👏👏👏

Feel free to leave any questions or comments in the PR thread if something is not 100% clear.
Please, remember to tag me in your question so I can receive the notification.

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[K0ppai]

Thanks for the review @AbelG101.