Probably off topic, but I was curious if all query operations use $? I had originally thought it was just for jQuery, but I see now that it is also used in the MongoDB query language. jQuery and MondoDB are separate right?? Or is it because of nodeJS that we're using the $?

Where is the database stored? Can we make our own local ones?

Why we are using MongoDB instead of MySQL

I’d like to talk more about the MQL syntax.

I feel like the content from the reading today is very dense, and it would be nice if we can unpack it more together during class.

can we go over projection? not sure I understand what it is used for

When would  we search with projection vs regex/ what is the difference?

How we might use nested arrays and their limitations. For example, the reading demonstrated using a nested array to search for movies with a cast of size three. Can you use a nested array to search for a movie with a cast of size three which also includes George Clooney? Or would this get too messy with a nested array? 

Do examples (would a Jupyter notebook be possible?) of ways to match strings/sort/etc!

How will the returned result look like when we find the elements by their keys if there are multiples that satisfy the conditions?

The argument that find and findOne takes in. Also their returns.

regular expressions / Regex; E.g. expand more on ^ and $. / why do we want to use regular expressions when searching strings?

Overall, I feel like I just need more time and practice to digest the reading materials. I'm also confused about what escaping from a metacharacter means? 

things were pretty clear for me!