what is api
An application program interface (API) is a set of routines, protocols, and
tools for building software applications.
Basically, an API specifies how software components should interact.
Additionally, APIs are used when programming graphical user interface (GUI)
components.
A good API makes it easier to develop a program by providing all the
building blocks. A programmer then puts the blocks together.what is api
API (Application Programming Interface) helps in communication
and data exchange between two software systems. It is the channel which
connects two software systems communicate with one another.
An API forms the middle layer of a three-layered application pyramid,
consisting of a data layer, a server layer and a presentation layer.
While the data layer is concerned with data storage and the presentation
layers are concerned with the user interface, the server layer is composed
of business logic that defines the way for users to interact with various
functions, features, and information.
RESTful API ==> plain text, html, xml, json
SOAP ==> more secure, works with only xmlwhat is an api
=> On a bare minimum explanation, API are function prototypes which enable the
user to use the functionality of any component by making a function call
without revealing the internal workings of the component.
=> It is a mode of abstraction from the lower layers of software stack , so as
to only provide service when needed for higher layers.
=> An API can manifest in many forms, it can be a simple function call in C,
it can be web service API such as Twitter or FB API, it can be a library call
to OS kernel, or can be an interrupt routine.
=> API can be just a standalone call or in form of libraries. API are part
and parcel of software interaction and data transfer.
Hope this clarifies.what is an api
An application programming interface (API) is a computing interface which
defines interactions between multiple software intermediaries.
It defines the kinds of calls or requests that can be made, how to make them,
the data formats that should be used, the conventions to follow, etc.what is api
It means connectivity.
I mean API is the messenger that takes requests and
tells a system what you want to do and then returns the response back to you
What is JSON? JavaScript Object Notation
It's a key value pair. its popular light-weight way of transferring data
What is Postman is a Client tool to work with APIs
to send requests get response. Organize the requests
Collection in Postman is a top level folder
Header: exists in both request and response,
is metadata about the request. It's a key value pair
Content Type: in request header: to specify what kind of data
we are sending to the server
in response header: what was the contenttype we got as responseCopyright © 2021 Codeinu
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