🔹 What is a Data Type?
A data type defines what kind of value is stored in a field or variable — such as a number, a string of text, or a date.
🔹 Why Are Data Types Important in MongoDB?
MongoDB uses a binary form of JSON called BSON. BSON supports various data types that help MongoDB understand how to:
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Store and sort values
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Run efficient queries
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Apply filters and comparisons correctly
🔹 Common MongoDB Data Types
Data Type | Description |
|---|---|
| Text values |
| Integer and floating-point numbers |
|
|
| Date and time values |
| A list of values |
| Embedded document (nested object) |
| Unique identifier automatically created |
| Explicitly empty value |
Knowing these helps avoid query errors and makes your data more reliable.