TK_MHH_MONGODB_1

The data model available within MongoDB allows us to represent ___

a. Both All
b. Hierarchical relationships
c. None of the mentioned above
d. Able to handle complex structures

• A

• B

• C

• D

The most frequent operations in a given application are ___

a. The read and write operations
b. The write operations
c. The read operations

• A

• B

• C

Why did we introduce the one-to-zillions relationship in our modeling notation?

a. To address the fact that the concept of relationship linked to a huge number of entitites is missing in normal crow's foot notation.
b. To address the fact that a crow's foot has 5 fingers, not 3.
c. To highlight the fact that huge cardinalities may impact design choices.

• A

• B

• C

Which of the following are use cases in which you should model your data for performance rather than simplicity?

a. It is expected that the solution will be designed with only 10 shards.
b. There is not an applicable design pattern to the solution.
c. The application is being developed by 100 engineers.

• A

• B

• C

The data in MongoDB has a flexible schema?

a. False
b. True

• A

• B

Which of the following statements are true about data modeling using MongoDB?

a. MongoDB is schema-less so you should not worry about designing a schema for your models.
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b. MongoDB will help you iterate on the schema designs of your models throughout your application's lifecycle.

c. MongoDB should only be used for unstructured datasets.

• A

• B

• C

In MongoDB, write operations are atomic at the ___ level.

.

a. collection
b. document
c. row
d. all of the mentioned

• A

• B

• C

• D

Amongst which of the following is/are true about MongoDB?

a. High performance database x
b. MongoDB is a cross-platform database
c. Document oriented database
d. All of the mentioned above

• A

• B

• C

• D

A document is a set of ___

.
a. Activity pair set
b. Application pairs
c. None of the mentioned above
d. Key-value pairs

• B

• A

• C

• D

MongoDB supports searching by ___

.

a. All of the mentioned above
b. Field
c. Regular expression searches
d. Range queries

• A

• B

• C

• D