RPG: Report Program Generator

RPG, short for Report Program Generator, is a high-level programming language primarily designed for business applications, report generation, and data processing on IBM midrange systems such as IBM i (formerly AS/400). It is widely used in enterprise environments for batch processing, interactive applications, and financial or administrative reporting.

SQLite

SQLite, short for Structured Query Language Lite, is a self-contained, serverless, and lightweight relational database engine that implements SQL. It is widely used in embedded systems, mobile applications, desktop software, and small-to-medium web applications. Developers can download SQLite from the official SQLite Downloads page, which provides precompiled binaries, source code, and documentation for multiple platforms including Windows, Linux, and macOS.

MySQL

MySQL, short for My Structured Query Language, is an open-source relational database management system (RDBMS) that uses SQL for defining, manipulating, and querying data. It is widely used in web applications, server-side software, and enterprise systems. Developers can download MySQL from the official MySQL Downloads page, which provides installers, binaries, and documentation for Windows, Linux, and macOS platforms.

PostgreSQL

PostgreSQL, short for PostgreSQL Database Management System, is an open-source, high-performance relational database system that implements SQL standards and provides advanced features such as transactions, concurrency, and extensibility. It is widely used in web applications, enterprise systems, and data-driven software.

SQL

SQL, short for Structured Query Language, is a domain-specific language used for managing and manipulating relational databases. It is widely implemented in database management systems (DBMS) such as MySQL, PostgreSQL, Microsoft SQL Server, and SQLite. Developers can use SQL to create, read, update, and delete data, as well as define schemas, enforce constraints, and manage transactions.

YQL

YQL, short for Yahoo Query Language, is a SQL-like language designed to query, filter, and combine data from web services and APIs. It was widely used in web applications to retrieve structured data such as RSS feeds, JSON, and XML from various sources using a consistent syntax. Developers could access YQL through the official Yahoo Developer Network endpoint, or via SDKs and HTTP requests for integration in web and server applications.