Application Programming Interface Guide Oracle Documentation Form

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hey cuckoo let me ask you a question how do apps let you create an account and login with your Facebook or Google credentials here's another one how does your favorite weather app get today's weather forecast the answer to both of these questions they talk to other systems to get the data or to verify your credentials and the way that these two systems talk to each other is do something called an API or application programming interface an API simply states the rules for the communication to happen for example if you're applying for a passport you can't just go to the printing facilities and make yourself a passport there's a certain procedure that you have to follow you fill out the forms you take a photo you take these documents to a passport office and you talk to the lady and you hand in your documents you pay the fee and then you wait you have no idea what's happening behind the scenes once you hand in your documents the system took your inputs it's working in the back and when it