understanding replica sets theoretically

getCart() done

review functionality done

lab 3 done

text indexes done + search() added

getItems() for ALL + getNumItems() done :)

getItem(): except ALL + getCategories()

final project setup

understanding replica set

write concerns: w and j values

homeworks done :)

using $group and $project together

constructing _id in $group stages

understanding $group

using accumulators