Software process modelling in EPOS

Abstract

EPOS1 is an instrumentable, kernel Software Engineering Environment (SEE). It consists of facilities for management of versioned products (configurations) through file-based workspaces attached to a versioned DBMS. EPOS will also manage the associated software development processes (tasks), being the subject of this paper. The EPOS-OOER semantic data model can describe deriver tools, human actors, tasks and subtasks, projects, and triggers/notifiers; as well as normal software products. EPOS-OOER incorporates object-oriented ERA modelling, extended with tasking (PRE, POST, CODE) and simple type constructors (FORMALS, DECOMPOSITION). Customization is done through versioning of task types in project-specific workspaces. Static task knowledge is expressed by types and subtyping, and is used for reasoning, planning, scheduling and execution of activities. Dynamic task knowledge is expressed by a versioned task network with a horizontal (temporal) and a vertical (decomposed) dimension. Tasks are connected to products by normal relationships.