Data Validation in MongoDB—JSON Schema
Let's learn how to enforce data structure and types in MongoDB collections using JSON Schema validation.
We'll cover the following...
Think of data validation as MongoDB's way of checking our homework—it makes sure we're turning in work that follows the rules. Without it, our database might end up with:
Typos in field names.
Wrong data types (like a string instead of a number).
Missing required fields.
This can lead to issues if our app depends on reliable data. With validation, MongoDB acts like a gatekeeper, only allowing data that matches our defined rules.
What is JSON schema validation?
A JSON schema is a way to describe what our data should look like:
What fields are required?
What type of data should each field contain?
Can a field only accept certain values?
MongoDB uses this schema to validate every document inserted into or updated in a collection. ...