Abstract
When an (accounting) database schema does not meet the requirements of a firm, the schema must be changed. Such schema evolution can be considered as realizable via a sequence of operators. This research proceeds in the following three steps. First, we define a set of basic evolution schema operators and employ the evolution heuristics to guide the evolution process. Second, we explore how domain-specific knowledge can be used to guide the use of evolution operators to complete the evolution task. A well-known accounting data model is used here to guide the schema evolution process. Third, we discuss a tool built to implement the evolution operators, using the evolution heuristics and domain-specific knowledge.
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