SOFTWARE ENGINEERING

Detailed explanation-1: -OpenAPI Specification (formerly Swagger Specification) is an API description format for REST APIs. An OpenAPI file allows you to describe your entire API, including: Available endpoints ( /users ) and operations on each endpoint ( GET /users, POST /users ) Operation parameters Input and output for each operation.

Detailed explanation-2: -The required keyword in OpenAPI Schema Objects is taken from JSON Schema and means: An object instance is valid against this keyword if every item in the [ required ] array is the name of a property in the instance. In other words, required means “property must be present", regardless of its value.