Learn MQL with Real Code Examples
Updated Nov 18, 2025
Installation Setup
Install MongoDB server
Install MongoDB shell (mongosh)
Connect via drivers for Node.js, Python, Java, etc.
Configure authentication and database users
Environment Setup
Install MongoDB server
Start mongod service
Connect via mongosh or driver
Set up authentication and roles
Config Files
mongod.conf
MongoDB URI connection strings
Indexes defined per collection
Views for derived data
Cli Commands
mongosh
show dbs, show collections
db.collection.find(), insertOne(), updateMany()
db.collection.aggregate()
Internationalization
Store UTF-8 encoded strings
Support multi-language fields
Collation options for sorting
Locale-aware queries
Accessibility
Use clear field names
Maintain consistent schema conventions
Provide indexes for fast access
Document API contracts for developers
Ui Styling
Not applicable directly (data-level only)
Use tools like MongoDB Compass for GUI visualization
Integrate with front-end frameworks via APIs
Custom dashboards via BI tools
State Management
Document fields store entity state
Atomic single-document updates
Transactions for multi-document operations
Versioning via timestamps or field tracking
Data Management
CRUD operations via MQL
Aggregation pipelines for analysis
Indexes for performance
Backup and restore via mongodump/mongorestore