An API is a means through which one can access any program functions. There are numerous ways in which this can be done and many have varying levels of simplicity and complexity as well as advantages and disadvantages. In some cases, the properties of these APIs almost overlap. This means it is typically delivered in numerous forms and REST is just one of them. A REST API enables your interaction with hosted databases. With this, you will be able to easily use the JSON API over the HTTPS. This makes it possible for you to easily create, view and even destroy databases. You will be able to trigger backups and also download them automatically.
REST stands for Representational State Transfer and refers to an approach used in web apps in order to specify the roles of the various components in the app. REST is a conventions-based approach and applies constraints on the requests placed. It adds certain functionalities to various HTTPS verbs such as overloaded, POST, DELETE, PUT and GET. It will translate the standard databases to these HTTP verbs. By following its conventions, it is possible to translate certain business logic into HTTP.
REST API, therefore, refers to the URL routes which are used to perform certain actions on some system entities. It makes use of these conventions along with data transfer mechanisms such as XML and JSON in order to execute these functions. It may also do with some authentication mechanism that you can use in building sets of APIs for creating, reading, updating and deleting records in a given system via HTTP calls. This is done statelessly.
REST API is generally used in describing HTTP based services along with data access. REST API is used when an application is able to use an HTTP client in order to send out requests and also carry out processing of responses. Several kinds of applications could make use of the RESTful APIs. For example, a desktop application or server using a third party application through its HTTP API could process responses using a RESTFul API.