You should be able to rewatch them.
Can you share some screenshots?
1-I used the terms "child" and "parent" to help you understand, but it had the opposite effect. Let's forget about this relationship.
2-The purpose of the final challenge is to use all the knowledge you have learned over the course and apply it to this challenge.
If you didn't understand the importing data into tables, I'd suggest revisiting the lessons.
3-A real-world challenge would be something along the lines.
A customer want to manage their animals. The app should track the arrival and sale of animals, monitor their health and vaccination records, and manage feeding schedules. It should also generate reports on sales trends and inventory levels to help the owner make informed business decisions.
You need to figure out how many tables, columns, apps...
4-I'd suggest you join the weekly live session where the instructors can walk you through.
child and parent are terms used to explain table relationships, like you can't have a child without parents the same as you cannot select initial shelter value (lookup column) without entering data in shelter table.
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