Database Indexing Explain plan

Question 1

In the nomenclature of MongoDB, as there is a database in relational model, what can we call it in MongoDB?

• Database

• Tables

• Set of data

• Data system

Question 2

In the nomenclature of MongoDB, as there is a tables in relational model, what can we call it in MongoDB?

• Database

• Collections

• Tables

• Tuples

Question 3

In MongoDB, suppose you need to see the execution stats of the query which is running on the system, then how would you do that?

• Explain("ExecutionStats");

• Explain("Execution");

• Explain("Stats");

• None of the above

Question 4

Suppose, you have a MongoDB database with a collection named as Movies, then you needed to see one of the document present in that collection, which one of the following command will be the correct to see a collection data?

• DB.Movies.findOne()

• DB.Movies.one()

• DB.Movies.collectionDataOne()

• DB.Movies()

Question 5

Suppose, you have a MongoDB database with a collection named as Movies, then you needed to see one of the document present in that collection, which one of the following command will be the correct to see a collection data?

• DB.Movies.findOne()

• DB.Movies.one()

• DB.Movies.collectionDataOne()

• DB.Movies()

Question 6

Suppose yuo have a MongoDB database, having a collection named as Movies, then select the command which would help in finding the movies which are developed in 1983, the collection contains a column as Year.

• db.movies.find("Year" : "1983");

• db.movies.find{"Year" : "1983"};

• db.movies.find({"Year" : "1983"});

• db.movies.findOne({"Year" : "1983"});