Introduction to MongoDB
MongoDB is one of the most popular NO-SQL databases. The word is derived from humongous.
It’s a relatively new breed of database that has no concepts of tables, joins, foreign keys, transactions etc.
It is an open-source document-oriented database developed by MongoDB inc. in 2009.
So MongoDB doesn’t use table, row, column format to store data, rather it uses a storage format called BSON which is similar to JSON.
MongoDB is used for high volume data storage.
A simple MongoDB structure :
Key components of MongoDB Architecture
It is a physical container for data. We can store multiple databases on a single MongoDB server.
A set of key-value pairs is known as Document.
Basically, a record is called a document that is associated with a dynamic schema. The benefit of having a dynamic schema is that a document in a single collection does not have to possess the same structure or field.
This is a grouping of MongoDB documents.
Consider the collection as Table in RDBMS. The entire collection exists within a single database.
There is no schema when it’s come to a collection.
Why use MongoDB?
- Document Oriented: Instead of multiple relation structure like RDBMS, MongoDB stores the data in document format. This makes MongoDB very flexible and adaptable to real business.
- Indexing : Indexes can be created to improve performance of search within MongoDB.
- MongoDB has exceptional scalability. It makes it easy to fetch the data and provides continuous and automatic integration. Along with these benefits, there are multiple reasons why you need MongoDB:
- No downtime while the application is being scaled
- Performs in-memory processing.
- Text search.
- Graph processing.
- Global replication.
Difference between MongoDB and MySQL:
|The query language is structured query language.
|It represent data in tables and rows.
|It represents data as key-value pair.
|Defining tables and columns is required.
|Defining the schema is not required.
|It support joins.
|It does not support join.
|It has a risk of SQL injection attacks.
|Because of it’s design, MongoDB is less of an attack.
|MySQL is slower as compared to NoSQL
|MongoDB is faster.
Hope you like this!
Keep helping and happy 😄 coding