MongoDB Insert Functionality Quiz

RDBMS

To uniquely identify each record

Cannot have dynamic fields on demand

use

Create, Read, Update, Delete

createCollection()

insertOne()

Horizontal scaling

Not Only SQL

A schema-less database system

Better performance for complex queries

Swift

MongoDB

npm install mongodb

To connect to a MongoDB database

$gt

$or

$pull

findOne()

insertMany()

findOne()

It specifies the fields to exclude from the results

It increments a field value by a specified amount

False

True

True

False

False

True

False

True

True

True

True

True

True

False

True

False

True

True

True

True

True

True

True

insertOne() = Inserts a single document into the database insertMany() = Inserts multiple documents into the database createCollection() = Creates a new collection find() = Queries a collection and returns the documents that match the query criteria

Database = A container for collections Collection = A group of MongoDB documents Document = A set of key-value pairs CRUD = Acronym for Create, Read, Update, and Delete operations on a database

$gt = Operator used to match values greater than a specific value in a query $inc = Operator used to increment the value of a field in an update operation $in = Operator used to match values that are contained within an array in a query $sample = Operator used to retrieve a random sample of documents from a collection

show dbs = Displays all available databases use = Changes or creates a new database db..insertOne() = Inserts a single document into a collection db..find() = Retrieves all documents from a collection

Fixed schema = A constraint in RDBMS where the table structure needs to be altered if the schema changes Foreign keys = A type of constraint in RDBMS that establishes a link between two tables Primary keys = A type of constraint in RDBMS that uniquely identifies a record in a table Data types of the data columns = A part of the structure of a table in RDBMS that defines the type of data that can be stored in a column

RDBMS = A type of database management system that enforces a structured data model based on tables with predefined schemas NoSQL = A type of database that provides a mechanism for storage and retrieval of data that is modeled in means other than the tabular relations used in relational databases Foreign key = A field in a table that refers to the primary key in another table Primary key = A field in a table that uniquely identifies a record

One-to-one = A relationship between two entities where each entity in the first table can have at most one related entity in the second table One-to-many = A relationship between two entities where each entity in the first table can have many related entities in the second table Many-to-one = A relationship between two entities where each entity in the first table can have at most one related entity in the second table, but each entity in the second table can have many related entities in the first table Many-to-many = A relationship between two entities where each entity in the first table can have many related entities in the second table, and each entity in the second table can have many related entities in the first table

$in operator = Used to match values that are contained within an array $inc operator = Used in MongoDB update operations to increment the value of a field by a specified amount Embedded Document = A document that is nested within another document Primary Key = A unique identifier for a document in a collection

Document-oriented database = A database that stores JSON-like documents with dynamic schemas Built-in horizontal scalability = The ability to add more servers and distribute the workload High performance and indexing = Efficient data retrieval and storage Rich queries and data aggregations = Support for complex data operations

SQL = A language used for relational database queries NoSQL = A class of schema-less database systems that are not based on the traditional relational database model RDBMS = A type of database system that is based on the relational model MongoDB = An open source, document-oriented database system that is not based on the traditional relational model

Key-value stores = A type of NoSQL database that uses a simple key-value data model Graph database = A type of NoSQL database that uses a graph structure to represent and store data Document-oriented = A type of NoSQL database that stores and retrieves data as documents Column family = A type of NoSQL database that stores data in columns rather than rows

insertMany() = Used to insert multiple documents at once find() = Used to select data from a collection, accepts a query object updateOne() = Updates the first document that matches the query deleteMany() = Deletes all documents that match the query

$inc operator = Used to increment a field value in update operations projection parameter = Describes which fields to include in the results of a find method upsert option = Inserts the document if it is not found during an update operation $gt operator = Used to match values greater than a specific value in a query

$in = Matches values that are contained within an array $gt = Matches values greater than a specific value $inc = Increments a field value in update operations $or = Matches documents where either of two queries match

insertOne() = Used to insert a single document into a MongoDB database drop() = Removes a collection or view from the database findOne() = Selects only the first document that matches the query criteria updateMany() = Updates all documents that match the provided query

$eq = Values are equal $lt = Value is less than another value $in = Value is matched within an array $not = Returns documents where the query does not match

$currentDate = Sets the field value to the current date $inc = Increments the field value $set = Sets the value of a field $addToSet = Adds distinct elements to an array

find() = Used to query a collection and return all documents that match the query criteria findOne() = Used to query a collection and return only the first document that matches the query criteria insertOne() = Used to insert a single document into a MongoDB database insertMany() = Used to insert multiple documents at once

use = Used to change or create a new database db..find() = Used to query a collection and return all documents that match the query criteria db..findOne() = Used to query a collection and return only the first document that matches the query criteria db..insertOne() = Used to insert a single document into a MongoDB database

Loading sample data into MongoDB Atlas = Click the ellipsis '...' and select 'Load Sample Dataset' Installing the MongoDB package in a Node.js project = Use the following command in your terminal: npm install mongodb Connecting to a MongoDB Atlas database = Get the connection string from the Atlas dashboard and replace the necessary fields Performing CRUD operations on a MongoDB database using the MongoDB Node.js language driver = Use the appropriate methods such as find(), insertOne(), updateMany(), etc.

MongoDB = A document-oriented NoSQL database program Node.js = A JavaScript runtime environment that executes JavaScript code outside of a web browser MongoDB Atlas = A cloud-based database service for MongoDB MongoDB Node.js language driver = A software component that enables interaction between a Node.js application and a MongoDB database

Step 1 = Install the mongodb package in your Node.js project Step 2 = Create a connection string to connect to the MongoDB Atlas database Step 3 = Use the connection string to establish a connection to the database Step 4 = Perform CRUD operations on the database using the MongoDB Node.js language driver

find() = Used to query a collection and return a cursor to the matching documents insertOne() = Used to insert a single document into a collection updateMany() = Used to update multiple documents in a collection that match the filter deleteOne() = Used to delete a single document from a collection