NoSQL databases - Class 4 - quiz 1

When mongoDB has to search through all documents of a collection during a find query it is called

• simple indexes

• table scan

• explain

• multi indexes

If I want to inspect the execution of a find query I should use the function

• sort()

• hint()

• explain()

• limit()

• createIndex()

A high cardinality field means that there are lots of distinct values for that field

• True

• False

In MongoDB we can not create an index on a field that holds values of type

• array

• boolean

• documents

• geo-spatial data

• None of those answers

We should try to create indexes on fields that we query most often on

• True

• False