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JSON Schema specifies a JSON-based format to define the structure of JSON data for validation, documentation, and interaction control. It provides a contract for the JSON data required by a given application and how that data can be modified. [29] JSON Schema is based on the concepts from XML Schema (XSD) but is JSON-based. As in XSD, the same ...
The lowest level of the model describes a Web API with a single URI (typically POST over HTTP) accepting all the range of operations supported by the service. Resources in this form cannot be well-defined. Messaging is done in XML, JSON, or other text formats. These are typical RPC POX and many SOAP services. Level zero systems don't classify ...
For example, the server could send data from its database as HTML, XML or as JSON—none of which are the server's internal representation. Resource manipulation through representations: When a client holds a representation of a resource, including any metadata attached, it has enough information to modify or delete the resource's state.
OData uses different formats for representing data and the data model. In OData protocol version 4.0, JSON format is the standard for representing data, with the Atom format still being in committee specification stage. For representing the data model, the Common Schema Definition Language (CSDL) is used, which defines an XML representation of ...
There are some conceptual similarities to Odata - though Restful Objects places much more emphasis on exposing the behaviour of domain objects, not just their data. There is an overlap with the naked objects pattern , in that both are concerned with creating generic interfaces to domain objects models.
Hypertext Application Language (HAL) is a convention for defining hypermedia such as links to external resources within JSON or XML code. It is documented in an Internet Draft (a "work in progress"), with the latest version 11 published the 10th of October 2023.
A user-agent makes an HTTP request to a REST API through an entry point URL. All subsequent requests the user-agent may make are discovered inside the response to each request. The media types used for these representations, and the link relations they may contain, are part of the API. The client transitions through application states by ...
RESTful API Modeling Language (RAML) is a YAML-based language for describing static APIs (but not REST APIs). [2] It provides all the information necessary to describe APIs on the level 2 of the Richardson Maturity Model .