Mongo

Question 1

D________ databases are usually categorized under the NoSQL umbrella term.

Answer 1

Document databases are usually categorized under the NoSQL umbrella term.

Question 2

Document databases are usually categorized under the No____ umbrella term.

Answer 2

Document databases are usually categorized under the NoSQL umbrella term.

Question 3

A d____ file, typically named “.env”, is used to store environment variables for an application, allowing developers to separate configuration settings from their code and manage sensitive information like API keys and database passwords securely without exposing them directly within the codebase

Answer 3

A dotenv file, typically named “.env”, is used to store environment variables for an application, allowing developers to separate configuration settings from their code and manage sensitive information like API keys and database passwords securely without exposing them directly within the codebase

Question 4

A dotenv file, typically named “.env”, is used to store e________ v________s for an application, allowing developers to separate configuration settings from their code and manage sensitive information like API keys and database passwords securely without exposing them directly within the codebase

Answer 4

A dotenv file, typically named “.env”, is used to store environment variables for an application, allowing developers to separate configuration settings from their code and manage sensitive information like API keys and database passwords securely without exposing them directly within the codebase

Question 5

C________s are analogous to tables in relational databases.

Answer 5

Collections are analogous to tables in relational databases.

Question 6

Collections are analogous to t._._s in relational databases.

Answer 6

Collections are analogous to tables in relational databases.

Question 7

Document databases like Mongo are s_____-less, meaning that the database itself does not care about the structure of the data that is stored in the database.

Answer 7

Document databases like Mongo are >schemaless<, meaning that the database itself does not care about the structure of the data that is stored in the database.

Question 8

even though the ‘_id’ property of Mongoose objects looks like a string, it is in fact an o_______

Answer 8

even though the ‘_id’ property of Mongoose objects looks like a string, it is in fact an object*

Question 9

The idea behind Mongoose is that the data stored in the database is given a schema at the level of the a________ that defines the shape of the documents stored in any given collection.

Answer 9

The idea behind Mongoose is that the data stored in the database is given a schema at the level of the application that defines the shape of the documents stored in any given collection.

Question 10

const mongoose = require(‘m_._.._e’)

Answer 10

const mongoose = require(‘mongoose’)

Question 11

At the top level, a MongoDB c________ is your deployment, which can contain multiple databases.

Answer 11

At the top level, a MongoDB cluster is your deployment, which can contain multiple databases.

Question 12

Each d_________ within a cluster holds collections and is similar to the databases in relational systems.

Answer 12

Each database within a cluster holds collections and is similar to the databases in relational systems.

Question 13

In Mongoose, a m______ represents a collection. Each m______ is mapped to one collection and defines how documents in that collection should be structured (according to the schema).

Answer 13

In Mongoose, a model represents a collection. Each model is mapped to one collection and defines how documents in that collection should be structured (according to the schema).

Question 14

D________s are individual records in a collection and follow the structure defined by the model’s schema.

Answer 14

Documents are individual records in a collection and follow the structure defined by the model’s schema.

Question 15

S_._._s lay out the blueprint for collections within a database.

Answer 15

Schemas lay out the blueprint for collections within a database.

Question 16

In Mongoose, a s________ definition specifies the field names, the types of each field, the constraints, and other options for the data

Answer 16

In Mongoose, a schema definition specifies the field names, the types of each field, the constraints, and other options for the data

Question 17

The schema defines collection => pass schema to m____ => m____ performs CRUD operations.

Answer 17

The schema defines collection => pass schema to model => model performs CRUD operations.

Question 18

mongoose.connection.c_._.() needs to be called so that the process can terminate after execution or else the process will hang.

Answer 18

mongoose.connection.close() needs to be called so that the process can terminate after execution or else the process will hang.

Question 19

Mongoose could be described as an object d_____ m_____ (ODM)

Answer 19

Mongoose could be described as an object document mapper (ODM)

Question 20

the Mongoose convention is to automatically name collections as the plural (e.g. notes) when the s_____ refers to them in the singular (e.g. Note).

Answer 20

the Mongoose convention is to automatically name collections as the plural (e.g. notes) when the schema refers to them in the singular (e.g. Note).

Question 21

Without i_______es, MongoDB must scan every document in a collection to find the documents that match each query. These collection scans are slow and can negatively affect the performance of your application. By using an i_____ to limit the number of documents MongoDB scans, queries can be more efficient and therefore return faster.

Answer 21

Without indexes, MongoDB must scan every document in a collection to find the documents that match each query. These collection scans are slow and can negatively affect the performance of your application. By using an index to limit the number of documents MongoDB scans, queries can be more efficient and therefore return faster.

Question 22

MongoDB stores data records as B___ documents which are gathered together in collections.

Answer 22

MongoDB stores data records as BSON documents which are gathered together in collections.

Question 23

BSON is a b_____ representation of JSON documents, though it contains more data types than JSON

Answer 23

BSON is a binary representation of JSON documents, though it contains more data types than JSON