Mutual Dependency

To understand mutual dependency, consider a JSON Document has two properties firstName and lastName

If both of these properties are mutually dependent, then both of the below conditions must be satisfied:

• If firstName is present, then lastName must also be present.
• If lastName is present, then firstName must also be present.

Similar to the previous lesson, we can use the dependentRequired keyword to enforce this mutual dependency.

Example Schema

1{
2  "type": "object",
3  "properties": {...},
4  "dependentRequired": {
5    "firstName": ["lastName"],
6    "lastName": ["firstName"]
7  }
8}

Task

1{
2  "name": "John Doe",
3  "creditCardNumber":"1234 5678 1234 5678",
4  "address":"123 Main St",
5}

You are given a Schema for the above JSON document in the side editor. Update the schema to make sure that creditCardNumber and address are mutually dependent.