The concept of external APIs (Application Programming Interfaces) in RPG (Report Program Generator) allows RPG programs to interact with external systems, services, and libraries, thereby extending their functionality and enabling integration with a wide range of applications. By leveraging external APIs, RPG developers can access additional features, data sources, and services that are not natively available within RPG. Let's explore the concept of external APIs in RPG in more detail:
1. What are External APIs?
External APIs are sets of rules and protocols that define how different software components can interact with each other. They provide a standardized interface for requesting and exchanging data between systems. External APIs can be in the form of web services, RESTful APIs, SOAP APIs, DLLs (Dynamic-Link Libraries), or shared libraries. These APIs expose a set of functions, methods, or endpoints that RPG programs can call to perform specific tasks or access external resources.
2. Utilizing External APIs in RPG:
a. Data Exchange: External APIs enable RPG programs to exchange data with external systems. For example, an RPG program can call an external API to retrieve data from a web service or submit data to an external app....
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