There are many different considerations to be made when running queries inMongoDB. A helpful thing to use in themongo shellwhen running afind()operation is to use theexplain()method. In this blog post, I’ll take a look at some of the options for explain() and what the results mean. ...
MongoDB provides different types of indexes to support specific types of data and queries. Default _id All the collections of MongoDB have an index on the _id field that exists by default. If novaluesspecified for the _id the MongoDB will create an _id field with an ObjectId value. The...