Gain insights into MongoDB's core concepts, including queries, CRUD operations, aggregation, and more. Discover how to build applications with hands-on experience and interactive widgets.

mongo.tar.gz

MongoDB is an open-source NoSQL database and stores data in the form of documents. It can be used as an alternative to traditional relational databases. NoSQL databases are schema-less and useful for working with large sets of distributed data. 

In this course, you will learn the core concepts of MongoDB including queries, documents, embedded documents, and operators with advanced features like CRUD operations, bulk write operations, GridFS, indexing, aggregation pipeline, authorization, and more.

You will have plenty of hands-on experience with the help of interactive widgets, and by the end you will have a strong understanding of how to build MongoDB-based applications.

MongoDB: The Complete Guide

Below are some key points to design better database models:
1. We always use the correct data type for the field. For example, numbers should not be stored as a string, they should be of int, long, decimal, or double type only.
2. Field names should have a consistent naming approach. For example, they should either be in camelCase or use an underscore (`_`) between two or more words.
3. MongoDB offers great flexibility to design models using embedded models. If possible, we should always convert the information of an entity into objects and embed it into the primary model. As a result, the information representation becomes very good.
4. Normalization should be considered when we don’t have a good benefit of embedding. In that case, the embedded document is used in multiple collections.
5. We keep our collection schema consistent for all the records. We don’t skip fields in records and avoid additional handling on the query level.
6. Indexing is important. We find out which fields need indexing and apply it to them. We should avoid unnecessary indexing because it may cause performance issues on write operations.
7. We use GridFS to store large files instead of binary Data.
8. We should prefer the `Date` type for dates instead of storing them into `numbers`.
9. Fields like a `Birthdate` should be of type `Date`, and should not store any time value.
 10. We store the currency, and use the `Amount` field to store the lowest value of the currency.


Learn how to design better models when using MongoDB as a database in your application. 

Design Better Database Models

Learn how to design better models when using MongoDB as a database in your application.

Introduction to Database and MongoDB

Create Database and Authorization

Performing CRUD Operations on MongoDB - Part 1

Performing CRUD Operations on MongoDB - Part 2

MongoDB Query and Database Performance

Learn Additional MongoDB Topics

Appendix

Design Better Database Models