Abstract:
The purpose of this paper is to study the basic theoretic structure of intelligent data base by means of logic. There are three parts of this paper. The first part introduces the concept and relational algebra in relational data base. The second part focuses on the relationship between logic and the structure of intelligent data base and compares the intelligent database application. The last part, a SQL (Structure Query Language) queries simulation program using logic programming language Prolog, demonstrates how logic applies to query languages.