REST API and CRUD

REST API and CRUD

• 1.
  REST API AND CRUD
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  WHAT IS AREST API? • REST stands for Representational State Transfer. • It is a lighter weight alternative to SOAP and WSDL XML-based API protocols.
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  • REST usesa client-server model, where the server is an HTTP server and the client sends HTTP verbs (GET, POST, PUT, DELETE), along with a URL and variable parameters that are URL-encoded. • The URL describes the object to act upon and the server replies with a result code and valid JavaScript Object Notation (JSON). WHAT MODEL DOES REST USE?
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  REST:HTTP METHODS?
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  Some of thecommon HTTP result codes that are often used inside REST APIs are as follows: • 200 - “OK”. • 201 - “Created” (Used with POST). • 400 - “Bad Request” (Perhaps missing required parameters). • 401 - “Unauthorized” (Missing authentication parameters). • 403 - “Forbidden” (You were authenticated but lacking required privileges). • 404 - “Not Found”. HTTP CODES
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  WHY REST API? •Developing a REST API enables us to create a foundation upon which we can build all other applications. • As previously mentioned, these applications may be web-based or designed for specific platforms, such as Android or iOS. • A REST API also makes it easy to implement other interfaces or applications over time, turning the initial project from a single. application into a powerful platform.
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  The CRUD acronymis often used to describe database operations. CRUD stands for CREATE, READ, UPDATE, and DELETE. WHAT IS A CRUD?
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  These operations mapvery nicely to the HTTP verbs, as follows: • POST: A client wants to insert or create an object. • GET: A client wants to read an object. • PUT: A client wants to update an object. • DELETE: A client wants to delete an object. CRUD OPERATION
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  CRUD APPLICATION EXAMPLE