LCM 3.0: A Language for Describing Conceptual Models. Syntax Definition

摘要

LCM (Language for Conceptual Modeling) is a specification language with whichconceptual models (CM's) can be specified. The authors assume that the CM's specified in LCM are used to represent some part of reality that is to be represented by a database system (DBS). A subset of LCM is intended to be executable. Version 3.0 of the LCM specification language is a revision of version 2 of the language, formerly known as CMSL (Conceptual Model Specification Language). The document intended to serve as a reference for the specifier int he area of syntactic issues of LCM 3.0. Although the text and examples in the document suggest informally a meaning of the specifications, the formal semantics of LCM 3.0 is not given.