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Welcome to the Data Modeling in MongoDB MCQs Page

Dive deep into the fascinating world of Data Modeling in MongoDB with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Data Modeling in MongoDB, a crucial aspect of MongoDB. In this section, you will encounter a diverse range of MCQs that cover various aspects of Data Modeling in MongoDB, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within MongoDB.

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Check out the MCQs below to embark on an enriching journey through Data Modeling in MongoDB. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of MongoDB.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Data Modeling in MongoDB. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Modeling in MongoDB MCQs | Page 4 of 7

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Q31.
Which of the following relationship uses references to describe documents between connected data?

a.

One-to-One Relationships with Embedded Documents

b.

One-to-Many Relationships with Embedded Documents

c.

One-to-Many Relationships with Document References

d.

None of the mentioned

Discuss
Answer: (b).One-to-Many Relationships with Embedded Documents
Q32.
Point out the correct statement.

a.

One-to-One Relationships with embedded documents presents a data model that uses embedded documents to describe one-to-one relationships between connected data

b.

One-to-One Relationships with document references presents a data model that uses embedded documents to describe one-to-one relationships between connected data

c.

One-to-Many Relationships with embedded documents presents a data model that uses embedded documents to describe one-to-one relationships between connected data

d.

All of the mentioned

Discuss
Answer: (a).One-to-One Relationships with embedded documents presents a data model that uses embedded documents to describe one-to-one relationships between connected data
Q33.
If the address data is frequently retrieved with the name information, how will you modify the following schema representing one to one relationship with referencing? 
{
   _id: "joe",
   name: "Joe Bookreader"
}

{
   patron_id: "joe",
   street: "123 Fake Street",
   city: "Faketon",
   state: "MA",
   zip: "12345"
}

a.

{
_id: "joe",
name: "Joe Bookreader",
address: {
street: "123 Fake Street",
city: "Faketon",
state: "MA",
zip: "12345"
}
}

b.

{
_id: "joe",
name: "Joe Bookreader",
address-> {
street: "123 Fake Street",
city: "Faketon",
state: "MA",
zip: "12345"
}
}

c.

{
_id: "joe",
name: "Joe Bookreader",
address:: {
street: "123 Fake Street",
city: "Faketon",
state: "MA",
zip: "12345"
}
}

d.

All of the mentioned

Discuss
Answer: (a).{
_id: "joe",
name: "Joe Bookreader",
address: {
street: "123 Fake Street",
city: "Faketon",
state: "MA",
zip: "12345"
}
}
Q34.
Which of the following is used to avoid the repetition of data in MongoDB schema?

a.

DeReferences

b.

References

c.

Cursor

d.

Collectors

Discuss
Answer: (b).References
Q35.
Point out the wrong statement.

a.

Decisions that affect how you model data can affect application performance and database capacity

b.

Collections do enforce document structure

c.

Data in MongoDB has a flexible schema

d.

None of the mentioned

Discuss
Answer: (b).Collections do enforce document structure
Q36.
What would be the more optimal schema to embed the address data entities in the patron data for following schema representing one to many relationships? 
{
   _id: "joe",
   name: "Joe Bookreader"
}

{
   patron_id: "joe",
   street: "123 Fake Street",
   city: "Faketon",
   state: "MA",
   zip: "12345"
}

{
   patron_id: "joe",
   street: "1 Some Other Street",
   city: "Boston",
   state: "MA",
   zip: "12345"
}

a.

{
_id: "joe",
name: "Joe Bookreader",
addresses: [
{
street: "123 Fake Street",
city: "Faketon",
state: "MA",
zip: "12345"
},
{
street: "1 Some Other Street",
city: "Boston",
state: "MA",
zip: "12345"
}
]
}

b.

{
_id: "joe",
name: "Joe Bookreader",
addresses: [
{
street: "123 Fake Street",
city: "Faketon",
state: "MA",
zip: "12345"
},
[
street: "1 Some Other Street",
city: "Boston",
state: "MA",
zip: "12345"
]
]
}

c.

{
_id: "joe",
name: "Joe Bookreader",
addresses: [
[
street: "123 Fake Street",
city: "Faketon",
state: "MA",
zip: "12345"
],
{
street: "1 Some Other Street",
city: "Boston",
state: "MA",
zip: "12345"
}
]
}

d.

None of the mentioned

Discuss
Answer: (a).{
_id: "joe",
name: "Joe Bookreader",
addresses: [
{
street: "123 Fake Street",
city: "Faketon",
state: "MA",
zip: "12345"
},
{
street: "1 Some Other Street",
city: "Boston",
state: "MA",
zip: "12345"
}
]
}
Q37.
How will avoid mutable, growing arrays in the following schema? 
{
   name: "O'Reilly Media",
   founded: 1980,
   location: "CA",
   books: [12346789, 234567890, ...]
}

{
    _id: 123456789,
    title: "MongoDB: The Definitive Guide",
    author: [ "Kristina Chodorow", "Mike Dirolf" ],
    published_date: ISODate("2010-09-24"),
    pages: 216,
    language: "English"
}

{
   _id: 234567890,
   title: "50 Tips and Tricks for MongoDB Developer",
   author: "Kristina Chodorow",
   published_date: ISODate("2011-05-06"),
   pages: 68,
   language: "English"
}

a.

{
_id: "oreilly",
name: "O'Reilly Media",
founded: 1980,
location: "CA"
}

[
_id: 123456789,
title: "MongoDB: The Definitive Guide",
author: [ "Kristina Chodorow", "Mike Dirolf" ],
published_date: ISODate("2010-09-24"),
pages: 216,
language: "English",
publisher_id: "oreilly"
]

{
_id: 234567890,
title: "50 Tips and Tricks for MongoDB Developer",
author: "Kristina Chodorow",
published_date: ISODate("2011-05-06"),
pages: 68,
language: "English",
publisher_id: "oreilly"
}

b.

{
_id: "oreilly",
name: "O'Reilly Media",
founded: 1980,
location: "CA"
}

[
_id: 123456789,
title: "MongoDB: The Definitive Guide",
author: [ "Kristina Chodorow", "Mike Dirolf" ],
published_date: ISODate("2010-09-24"),
pages: 216,
language: "English",
publisher_id: "oreilly"
]

[
_id: 234567890,
title: "50 Tips and Tricks for MongoDB Developer",
author: "Kristina Chodorow",
published_date: ISODate("2011-05-06"),
pages: 68,
language: "English",
publisher_id: "oreilly"
]

c.

{
_id: "oreilly",
name: "O'Reilly Media",
founded: 1980,
location: "CA"
}

{
_id: 123456789,
title: "MongoDB: The Definitive Guide",
author: [ "Kristina Chodorow", "Mike Dirolf" ],
published_date: ISODate("2010-09-24"),
pages: 216,
language: "English",
publisher_id: "oreilly"
}

{
_id: 234567890,
title: "50 Tips and Tricks for MongoDB Developer",
author: "Kristina Chodorow",
published_date: ISODate("2011-05-06"),
pages: 68,
language: "English",
publisher_id: "oreilly"
}

d.

None of the mentioned

Discuss
Answer: (c).{
_id: "oreilly",
name: "O'Reilly Media",
founded: 1980,
location: "CA"
}

{
_id: 123456789,
title: "MongoDB: The Definitive Guide",
author: [ "Kristina Chodorow", "Mike Dirolf" ],
published_date: ISODate("2010-09-24"),
pages: 216,
language: "English",
publisher_id: "oreilly"
}

{
_id: 234567890,
title: "50 Tips and Tricks for MongoDB Developer",
author: "Kristina Chodorow",
published_date: ISODate("2011-05-06"),
pages: 68,
language: "English",
publisher_id: "oreilly"
}
Q38.
__________ define what records to select for read, update, and delete operations.

a.

Query optimizer

b.

Query selector

c.

Update definitions

d.

All of the mentioned

Discuss
Answer: (b).Query selector
Q39.
The ___________ JavaScript shell and the MongoDB language drivers translate between BSON and the language-specific document representation.

a.

mongod

b.

mongo

c.

json

d.

none of the mentioned

Discuss
Answer: (b).mongo
Q40.
Which of the following statement is incorrect about documents in MongoDB?

a.

The field names cannot start with the dollar sign ($) character

b.

The field names cannot contain the dot (.) character

c.

The field names cannot contain the null character

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Page 4 of 7

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