w08d1.md

Assessment

Week 8

Day 1

Questions

• What is MongoDB?
• Why do we need a Database?
• What format does MongoDB use to store data?
• What's the differences between relational Database and a document database?
• Please explain pros and cons for NoSQL

Exercise

** Submit the commands required to make this happen **

1. Create a new MongoDB Database in your computer named w8d1
2. Create a animals collection within it
3. Add 3 animals with different attributes to the collection
4. Create a owners collection
5. Add 3 owners with different attributes to the collection
6. Add 1 animal to each owner:

• one by reference
• one embedded

BONUS

• Update all animals to include the number of legs each one has
• Write a query that will return how many animals have at least 4 legs