In this paper, the authors describe a custom relational algebra query software environment that enables database instructors to teach relational algebra programming. Instead of defining query ...

(1) The branch of mathematics that deals with relations; for example, AND, OR, NOT, IS and CONTAINS. (2) In a relational database, a collection of rules for dealing with tables; for example, JOIN, ...

Database normalization is the cornerstone of database theory. Once a database is normalized, relationships between the data in multiple tables must be established. A hefty part of designing a ...

In a world that is all about new apps and cloud computing, sometimes the important stuff doesn’t look new or cool. Sometimes key small business tools are just functional, they might have been around a ...