@an_piaggio: Tự nhiên ra chấm….và 1 chấm cái tự nhiên ko cầu kì quá.

ANN GIÓ ✅
ANN GIÓ ✅
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Sunday 28 April 2024 11:45:42 GMT
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MongoDB Mastery: Your Essential Cheat Sheet This cheat sheet is your comprehensive guide to mastering MongoDB, empowering you to streamline development and optimize database performance. Database Management: Show Databases: show dbs - Lists all available databases. Switch Database: use <database_name> - Selects the database for subsequent operations. Create Collection: db.createCollection(") - Creates a new collection within the current database. Show Collections: show collections - Lists all collections in the current database. CRUD Operations: Insert Document: db..insertOne({}) - Inserts a single document into a collection. Insert Multiple Documents: db..insertMany([, , ...]) - Inserts an array of documents into a collection. Find Documents: db..find({}) - Retrieves documents matching the specified criteria. Update Documents: db..updateOne({}, {$set: {}}) - Updates a single document based on a filter and field changes. Delete Documents: db..deleteOne({}) - Deletes the first document matching the criteria. Query Optimization: Indexes: Create indexes on frequently used fields to significantly improve query performance for specific search patterns. Filtering: Utilize efficient filtering criteria to narrow down search results and reduce processing time. Projection: Specify only the required fields in your find operations to minimize data transfer and processing. Data Analysis: Aggregation Framework: Leverage the aggregation framework for complex data transformations, grouping, and calculations, unlocking valuable insights. Security: Authentication: Enforce user authentication and authorization to restrict database access and data manipulation. Role-Based Access Control (RBAC): Define granular permissions based on user roles for enhanced security. Remember: This cheat sheet provides a foundational overview. Explore the official MongoDB documentation for in-depth details and advanced functionalities. Practice regularly to solidify your understanding and become a MongoDB pro!" width="135" height="240">
MongoDB Mastery: Your Essential Cheat Sheet This cheat sheet is your comprehensive guide to mastering MongoDB, empowering you to streamline development and optimize database performance. Database Management: Show Databases: show dbs - Lists all available databases. Switch Database: use - Selects the database for subsequent operations. Create Collection: db.createCollection("") - Creates a new collection within the current database. Show Collections: show collections - Lists all collections in the current database. CRUD Operations: Insert Document: db..insertOne({}) - Inserts a single document into a collection. Insert Multiple Documents: db..insertMany([, , ...]) - Inserts an array of documents into a collection. Find Documents: db..find({}) - Retrieves documents matching the specified criteria. Update Documents: db..updateOne({}, {$set: {}}) - Updates a single document based on a filter and field changes. Delete Documents: db..deleteOne({}) - Deletes the first document matching the criteria. Query Optimization: Indexes: Create indexes on frequently used fields to significantly improve query performance for specific search patterns. Filtering: Utilize efficient filtering criteria to narrow down search results and reduce processing time. Projection: Specify only the required fields in your find operations to minimize data transfer and processing. Data Analysis: Aggregation Framework: Leverage the aggregation framework for complex data transformations, grouping, and calculations, unlocking valuable insights. Security: Authentication: Enforce user authentication and authorization to restrict database access and data manipulation. Role-Based Access Control (RBAC): Define granular permissions based on user roles for enhanced security. Remember: This cheat sheet provides a foundational overview. Explore the official MongoDB documentation for in-depth details and advanced functionalities. Practice regularly to solidify your understanding and become a MongoDB pro!

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