WinRDBI: a nifty tool for understanding relational database query languages

The WinRDBI tool is a Windows-based Relational DataBase Interpreter, providing a tool for understanding relational database query languages [1], including relational algebra, domain relational calculus, tuple relational calculus, and SQL. Understanding the formal relational query languages for retrieving information from a relational database is critical to comprehending the SQL industry-standard query language. WinRDBI provides students with an interactive environment to learn the formal query languages as well as the industry standard SQL.