Rhapsody Basics

A Rhapsody Unit is a file system representation of modeling elements such as projects, packages, use case diagrams, object model diagrams, components, etc.

Each unit has a specific extension depending on its type:

Table 1. Unit types and corresponding file extension

Type	File Extension
Project	.rpy
Packages / profiles	.sbs
Object model diagrams	.omd
Structure diagrams	.std
Sequence diagrams	.msc
Components	.cmp
Use case diagrams	.ucd
Classes, actors & use cases	.cls
Collaboration diagrams	.clb
Component diagrams	.ctd
Deployment diagrams	.dpd
Panel diagrams	.pld
Controlled files	any extension

By default components, controlled files, profiles, and packages are units whereas diagrams, classes, actors and use cases are no units.