<aside> 💡 Document → The basic unit of data in MongoDB
</aside>
<aside> 💡 Collection → A grouping of documents
</aside>
<aside> 💡 Database → A container for collections
</aside>
MongoDB documents are displayed in JSON format, but stored in BSON.
BSON can Store → All JSON data types , Dates , Numbers , Object ID's ,And more!
Every document requires an—id field, which acts as a primary key.
If an inserted document doesn't include the _id field, MongoDB automatically generates an Objectld for the _**id** field.
Documents may contain different fields
Fields may contain different types
{
"_id": ObjectId("60d5ec58f3a3b50ae8d6a2e9"),
"name": "Dev Duo",
"age": 19,
"isStudent": true,
"languages":["C++" , "Java" , "JS" , "React JS"],
"address": {
"city": "Vijayawada",
"state": "Andhra Pradesh"
}
}