<h1>What is MongoDB database?</h1>
<p>MongoDB is a NoSQL database, which means it does not use the traditional table-based relational database structure. Instead, it uses a flexible, document-oriented approach to store data.</p>
<h1>Collection:</h1>
<p>A collection in MongoDB is a fundamental unit that groups together documents. Think of it like a folder in a file system: just as a folder contains multiple files, a collection contains multiple documents.<br>
Example of a Collection Imagine a collection named “books” in MongoDB. This collection would contain various books, each represented as a document.</p>
<h1>Document:</h1>
<p>In MongoDB, a document is the basic unit of data that you store in a collection. Think of it like a record in a spreadsheet or a JSON object. Each document contains a set of fields and values, which describe the data. Imagine a “books” collection with different book records. Each record is a document with various details about the book.<br>
Example<br>
{<br>
“title”: “Book1”,<br>
“author”: “xyz”,<br>
“publishedYear”: 1951<br>
}</p>
<p>{<br>
“title”: “Book2”,<br>
“author”: “pqr”,<br>
“publishedYear”: 1932,<br>
“genre”: “Drama”,<br>
}</p>
<p>In this “books” collection: Each document represents one book. Documents can have different fields, like “genres” or “publisher”, depending on the data available for each book.</p>


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MongoDB is a NoSQL database that uses a flexible, document-oriented approach to store data instead of the traditional table-based structure. A collection in MongoDB groups together multiple documents and acts like a folder in a file system. Documents, the basic unit of data in MongoDB, are similar to records in a spreadsheet or JSON objects, containing various fields and values representing the data.

MongoDB Essentials: What is MongoDB, Collections, and Documents?