Frontend for cyrano meta model

A frontend for new meta-model Cyrano was designed and developed. Frontend development concentrated on the query language specification and the translation of SQL query to Cyrano representation.

The data models considered in the design included two relational, one object-oriented, one hierarchical, and one network model. A sample SQL query was translated into derived Cyrano classes to resolve the heterogeneity in database names and attribute names.

The prototype implementation included a lexical analyzer which recognized the SQL tokens, a parser which validated the SQL grammar, and a translator which translated a SQL query into an equivalent Cyrano representation.