1. On your computer, go to this tutorial to study the basic MongoDB CRUD operations: https://docs.mongodb.com/manual/crud/
2. Open our lab MongoDB collection at: https://mongoplayground.net/p/xxyyMDsySoJ
3. The collection is visible in the "Configuration" column.
4. In the "Query" column in the middle of the page, write queries to solve the following questions (you may need to learn some of the MongoDB Operators https://docs.mongodb.com/manual/reference/operator/). For each question, you must include the query command as text and the result screen shot in your submission.
   1. Find all employees whose salary is higher than 500.
   2. Update the salary of the employee whose name is "JB" by adding 800 to its current value. (No hardcoded new value. Hint: use $inc)
   3. Add a new field phone to document with name "RS" and set phone value as "6145555555". (Hint: use $set)

Task 2: Briefly answer the following questions:

1. What are the major differences between MongoDB and relational databases?
2. What type of situation using MongoDB is better than relational databases? Why? Provide example to support your argument.
3. What type of situation using relational databases is better? Why? Provide example to support your argument.