MongoDB Data Models and BSON: Beginner-Level Quiz

MongoDB Data Models and BSON

This quiz tests your knowledge of MongoDB's flexible data models and BSON, the binary format for storing and exchanging data. Understanding these concepts is key to designing efficient, schema-less databases. Let's get right at it!

1 / 20

A ____________ data model with embedded data combines all related data for a represented entity in a single document.

denormalized

normalized

relational

non relational

2 / 20

The default chunk size is changed from 256k to 255k in which version?

2.4.10

3.0 b. c.

2.4.9

None of the above

3 / 20

The files_id field contains the _id of the chunk’s __________ document.

child

top

parent

None of the above

4 / 20

With MongoDB 3.0.0, the default use of the Power of _________ Allocations minimizes the occurrences of re-allocations as well as allows for the effective reuse of the freed record space.

1 sized

2 sized

3 sized

4 sided

5 / 20

Which of the following checks and repairs errors and inconsistencies in data storage?Which of the following checks and repairs errors and inconsistencies in data storage?

repairedDatabase

repairDatabase

recoverDatabase

All of the above

6 / 20

Which of the following statements is not true?

There are two tools that allow applications to represent these relationships: references and embedded documents

The key decision in designing data models for MongoDB applications revolves around the structure of documents and how the application represents relationships between data

When designing data models, always consider the application usage of the data (i.e. queries, updates, and processing of the data) as well as the inherent structure of the data itself

All of the above

7 / 20

Normalized data models describe relationships using ___________ between documents.

References

Relativeness

Evaluation

None of the above

8 / 20

Which of the following Statements is correct?

The key consideration for the structure of your documents is the decision to embed or to use references

With MongoDB, you cannot embed related data in a single structure or document

Reference schema is generally known as “denormalized” models

None of the above

9 / 20

To interact with embedded documents, use ___________ notation to “reach into” embedded documents.

comma

period

colon

dot

10 / 20

For the __________ storage engine, if the document size exceeds the allocated space for that document, MongoDB relocates the document on disk.

MAPv1

MAPv2

MAPv3

MAPv4

11 / 20

___________ strategy is used to explicitly avoid document growth.

pre-allocation

deallocation

allocation

None of the above

12 / 20

Which of the following statements is true?

The key challenge in data modeling is balancing the needs of the application, the performance characteristics of the database engine, and the data retrieval patterns

In practice, the documents in a collection share a different structure

Data in MongoDB has a flexible schema

All of the above

13 / 20

The embedded data model is used when you have _________ relationships between entities.

inheritance

isa

contains

All of the above

14 / 20

MongoDB using the mmapv1 storage engine has limits on the number of __________

Documents

Namespaces

Collections

None of the above

15 / 20

___________ is the _id is of the data type chosen for the original document in files collections.

files._id

fileobj._id

file._id

None of the above

16 / 20

Which of the following statements is wrong?

MongoDB represents queries as BSON objects

Field names in MongoDB’s query language have semantic meaning

Client libraries provide a convenient, injection free, process to build these objects

All of the above

17 / 20

________ store the relationships between data by including links or references from one document to another.

References

External

Capped

Embedded

18 / 20

Each index in MongoDB requires at least _________ of data space.

8KB

28KB

68KB

108KB

19 / 20

To get the current number of namespaces in the mongo shell, use ________________

db.system.namespaces.count(*)

db.system.namespaces.count()

db.system.namespaces.countc()

None of the above

20 / 20

Which of the following is used to avoid the repetition of data in MongoDB schema?

Cursor

DeReferences

Collectors

References

Your score is

The average score is 0%

MongoDB Data Models and BSON focus on how data is structured and stored in MongoDB using BSON (Binary JSON).

It covers different types of data models, such as embedded and referenced models, and how to choose an appropriate model for your application.

This quiz is designed for developers, data engineers, and database architects who want to deepen their understanding of MongoDB Data Models and BSON.

Good luck!