Extraction Using a REST API
Explore how REST APIs serve as a powerful tool for data extraction in ETL pipelines. Understand HTTP methods like GET and POST, JSON data formatting, and how APIs facilitate automated, scalable access to both internal and external data sources. Learn the importance of API documentation and address common limitations such as authentication and data formatting.
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What is API?
Like two humans need a similar interface to interact with each other, so do two pieces of software.
An API (application programming interface) is a common interface that allows two software to communicate. It’s a set of rules and standards that lets web-based software and applications transfer data to each other in a format both can understand. That format is usually JSON.
JSON (JavaScript Object Notation) is a simple key-value format used to represent information. There are many formats that we can use to convey information. Some common ones are HTML, XML, YAML, and more.
JSON is an excellent language for interaction between client and server because it’s compressed, easily readable, and can be understood by most modern systems today. ...