In computer science, domain relational calculus (DRC) is a calculus that was introduced by Michel Lacroix and Alain Pirotte as a declarative database query language for the relational data model.
在计算机科学中，域关系演算(DRC)是Michel Lacroix和Alain Pirotte为关系数据模型发明的的作为声明性数据库查询语言。