Mongo DB

Master MongoDB for NoSQL database management. Learn to design, query, and optimize databases using MongoDB. 

Introduction to MongoDB 

• Overview, features, and installation (local & cloud). 
• MongoDB vs SQL, BSON format. 

Basics of MongoDB 

• Databases, collections, and documents. 
• CRUD overview: Create, Read, Update, Delete. 

CRUD Operations 

• *Create*: insertOne, insertMany. 
• *Read*: find, filters, projections. 
• *Update*: updateOne, $set, $push. 
• *Delete*: deleteOne, deleteMany. 

Querying 

• Logical operators: $and, $or, $not. 
• Array queries: $all, $elemMatch. 
• Pattern matching: $regex. 
• Nested documents and full-text search. 

Indexing 

• Types: Single-field, compound, text, geospatial. 
• Creating, dropping, and performance optimization. 

Aggregation Framework 

• Pipeline stages: $match, $group, $project, $sort. 
• Advanced stages: $lookup, $unwind. 

Relationships & Data Modeling 

• One-to-one, one-to-many, many-to-many. 
• Embedding vs referencing documents. 
• Schema design principles. 

Transactions 

• Multi-document ACID transactions. 
• Transactions with replica sets. 

MongoDB with Applications 

• Connecting MongoDB with Node.js (mongoose). 
• Defining schemas, models, and performing CRUD. 
• Validation and middleware in Mongoose. 

Security 

• Authentication, roles, IP whitelisting. 
• Data encryption, backups, and restoration.