Relational calculus serves as the foundation for SQL, the language widely used to manipulate data in relational databases. It consists of operators that express logical conditions and algebraic ...

Abstract: One of our goals is to formalize an equivalence class (FEC) of the fuzzy relational database (FRDB). FRDB, an extension of RDB using a soft computing technique, fuzzy theory. Using our ...

Information and Database Systems - An introduction to databases. Course coverage includes the ER model, conceptual database design and modeling, the relational model, relational query languages ...