Database Schema Definition
The conceptual schema in IDEFlx is used in the CAD*I database group to describe the handled entities, properties and attributes,
The formal data structure used in the CAD*I project is described according to the High Level Data Specification Language (HDSL),
This data schema is divided into two main parts which are the Geometric part(B_REP model with planar faces) and the Administrative part covering the main administrative data used in industry according to the CAD*I database group(administrative data, access rights, closed models, etc.).
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