Mongoose Tutorial Last Updated : 24 Jan, 2024 Improve Improve Like Article Like Save Share Report Mongoose is an Object Data Modeling (ODM) library for MongoDB. MongoDB is a NoSQL database and Mongoose is used to interact with MongoDB by providing a schema-based solution. The Mongoose acts as the abstraction layer over the MongoDB database. It is generally preferred over using normal MongoDB because it simplifies the process of sending complex queries. Why Learn Mongoose? Mongoose is used in Node application to interact with MongoDB without write complex queries. It acts as an Object Data Modeling (ODM) used to define schema model and provides easy communication between application and database. It provides many features like schema validation, middleware support, and easy query building It manages relationships between data, and is used to translate between objects in code and the representation of those objects in MongoDB. Mongoose Advantages Schema Definition: Mongoose allows you to define structured schema model for MongoDB collections, because of that you get a clear understanding about the structure of model data. Data Validation: It can be used for data validation, which ensures that only valid and properly formatted data is stored in the database, which helps to manage data integrity. Middleware Support: Mongoose has the support of middleware which helps in the execution of custom logic before or after database operations, that offers flexibility in handling data interactions. Query Building: We don’t have to write those complex queries which we were writing in MongoDB because Mongoose simplifies the process by providing a high-level API that makes it easier to interact with the database. Modeling Relationships and Population: You can define relationships between different data models and it also supports population, due to this you can work with related data without disturbing database normalization. Mongoose Basics: Connect Node to database using Mongoose Mongoose Module Introduction Mongoose Connections Mongoose Schematype Mongoose SchemaType Options Mongoose Schema API Mongoose Schemas Virtuals Mongoose Schemas Indexes Mongoose Document API Mongoose Documents Mongoose Plugins Mongoose Populate Mongoose Queries Mongoose Virtuals CRUD Operations Using Mongoose Mongoose Documents vs Models Mongoose Schemas Creating a model Mongoose Validation Aggregation in MongoDB Transactions in Mongoose Mongoose Functions: Mongoose Populate() method Mongoose find() Function Mongoose where() Function Mongoose remove() Function Mongoose exists() Function Mongoose update() Function Mongoose insertMany() Function Mongoose findById() Function Mongoose findByIdAndDelete() Function Mongoose findByIdAndUpdate() Function Mongoose findByIdAndRemove() Function Mongoose findOneAndDelete() Function Mongoose findOneAndUpdate() Function Mongoose findOneAndReplace() Function Mongoose findOneAndRemove() Function Mongoose replaceOne() Function Mongoose updateOne() Function Mongoose updateMany() Function Mongoose insertMany() Function Mongoose findOne() Function Mongoose deleteOne() Function Mongoose Projects: Login form using Node JS and MongoDB Upload and Retrieve Image on MongoDB using Mongoose Pagination on an API Nodejs – Connect MongoDB with Node app using MongooseJS Signup Form Using Nodejs and MongoDB Login form using Node.js and MongoDB Connect Django Project to MongoDB using Django MongoDB Introduction How do Document Databases Work? How MongoDB works? MongoDB: An introduction What is MongoDB – Working and Features Difference between RDBMS and MongoDB MongoDB vs MySQL MongoDB Installation How to Install and Configure MongoDB in Ubuntu? How to install MongoDB on MacOS? How to install MongoDB on Windows? Basics of MongoDB MongoDB – Database, Collection, and Document MongoDB Cursor DataTypes in MongoDB What is ObjectId in MongoDB What is a MongoDB Query? MongoDB | Create a Database using MongoShell MongoDB | Delete Database using MongoShell MongoDB CRUD operations MongoDB Methods MongoDB – Insert() Method MongoDB – insertOne() Method MongoDB – insertMany() Method MongoDB – Bulk.insert() Method MongoDB – bulkWrite() Method MongoDB – Update() Method MongoDB – updateOne() Method MongoDB – updateMany() Method MongoDB – Find() Method MongoDB – FindAndModify() Method MongoDB – sort() Method MongoDB – copyTo() Method MongoDB – count() Method MongoDB – countDocuments() Method MongoDB – drop() Method MongoDB – Remove() Method MongoDB – deleteOne() Method MongoDB – getIndexes() Method MongoDB – dropIndex() Method MongoDB – dropIndexes() Method MongoDB Operators Comparison Operators MongoDB – Comparison Query Operators MongoDB $cmp Operator MongoDB – Greater than Operator $gt MongoDB – Less than Operator $lt MongoDB – Equality Operator $eq MongoDB – Less than equals to Operator $lte MongoDB – Greater than equals to Operator $gte MongoDB – Inequality Operator $ne MongoDB $in Operator MongoDB – $nin Operator Logical Operators MongoDB – Logical Query Operators MongoDB AND operator ( $and ) MongoDB OR operator ( $or ) MongoDB NOT operator ( $not ) MongoDB NOR operator ( $nor ) Arithmetic Operators MongoDB $add Operator MongoDB $subtract Operator MongoDB $multiply Operator MongoDB $divide Operator MongoDB $abs Operator MongoDB $floor Operator MongoDB $ceil Operator MongoDB $mod Operator MongoDB $sqrt Operator MongoDB $pow Operator MongoDB $exp Operator MongoDB $log Operator MongoDB $log10 Operator MongoDB $ln Operator Field Update Operators MongoDB – Field Update Operators MongoDB – Maximum operator ( $max ) MongoDB – Minimum operator ( $min ) MongoDB – Increment Operator ( $inc ) MongoDB – Multiply Operator ($mul) MongoDB – Rename Operator ($rename) MongoDB – Current Date Operator ($currentDate) MongoDB – SetOnInsert Operator ($setOnInsert) MongoDB Bitwise Update Operator Array Expression Operators MongoDB $isArray Operator MongoDB $size Operator MongoDB $arrayElemAt Operator MongoDB $concatArrays Operator MongoDB $reverseArray Operator Array Update Operators MongoDB – $pull Operator MongoDB – $pop Operator MongoDB – $pullAll Operator MongoDB – $push Operator MongoDB – Positional Operator ($) MongoDB – All Positional Operator ($[]) MongoDB – $position Modifier MongoDB – $addToSet Operator MongoDB – $each Modifier MongoDB – $sort Modifier MongoDB – $slice Modifier String Expression Operators MongoDB $concat Operator MongoDB $strcasecmp Operator MongoDB $toUpper Operator MongoDB $toLower Operator $substrCP (aggregation) operator in MongoDB Working with Documents and Collections Defining, Creating, and Dropping a MongoDB collection Adding and Querying the data in MongoDB How to Create Database & Collection in MongoDB MongoDB – Query Documents using Mongo Shell MongoDB – Insert Single Document Using MongoShell MongoDB – Insert Multiple Document Using MongoShell MongoDB – Update Single Document Using MongoShell MongoDB – Update Multiple Documents Using MongoShell MongoDB – Replace Documents Using MongoShell MongoDB – Delete Single Document Using MongoShell MongoDB – Delete Multiple Documents Using MongoShell MongoDB – Check the existence of the fields in the specified collection Sorting Documents in MongoDB Capped Collections in MongoDB Indexing in MongoDB Indexing in MongoDB MongoDB Index Types MongoDB – Compound Indexes MongoDB – Text Indexes MongoDB – Multikey Indexes MongoDB Advance Export data from MongoDB Import data to MongoDB MongoDB – Regex MongoDB Projection MongoDB – Embedded Documents MongoDB – Query Embedded Documents Using Mongo Shell Aggregation in MongoDB How to Enable Authentication on MongoDB? Create a user and add a role in MongoDB MongoDB – Replication and Sharding MongoDB – Backup and Restoration More on Mongoose: For more article, you can read recently published article’s on MongoDB: Recent Article on MongoDB and Mongoose: Recent articles on Mongoose Like Article Suggest improvement Next Mongoose Virtuals Share your thoughts in the comments Add Your Comment Please Login to comment...