Mcm-d Map Of The Development Of The Editor

The dissertation discussed the whole procedure of developing MCM layout editor. Firstly, Background of the project was introduced, including characters of multi-chip module, electronic design automation and our destination. The detail of solution was expounded sequentially. We used the methodology of software engineering and object-oriented technique to create the model of the system, converted it into engineering code framework by a correlative tool, then enriched framework to accomplish the software and made a simple test. The core of studying was constructing the system on object-oriented database so as to manage the data securely and efficiently. The key problem solved in the paper was giving the map between the oriented object method and relational database. The difference of mechanism between the two made design unmatched. Object model emphasized particularly on constructing applications by objects involving data and behavior; relational model inclined to memorize the data. object model usually accessed data through relationship between the objects; storing and taking data often need link tables and duplicate rows or columns according to the relational theory. So we needed a mapping method to join the two so as to get a successful design. the expected destination was attached by mappings between attributes and domains , classes and tables, relationships and so on. At the end of the paper, a layout of a multilayer co-firing ceramics filter drawn by the software was given out.