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We proposed a MetaModel approach in modeling and analysis of workflow based on event B. A workflow model is divided into three aspects: the promotion of process that we called step in operation, running time constraints and database updating. Basic properties such as activity dependency and time progressing are defined in a metamodel, a workflow model is a dynamic instance that written in event B...
Maintaining consistency constraints in a complicated development environment is ever an open problem, as different development tools are usually involved which in turn use various files or databases to store their data. To solve this problem, current XML technology was used to build a repository which manages all data of a development effort. XML queries were also presented to state consistency constraints...
The goal of the data model is to certify that all data objects required by the database are completely and accurately represented. Because the data model uses easily understood notations and natural language, it can be examined and confirmed as correct by the end-users. There are two major methodologies used to create a data model: the Entity-Relationship (ER) approach and the object model. Ontologies...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.