Creating object-oriented data model is the basic structure of the model. The format used is the relation object in the database. With the complexity of the database system can be looked at differently, in view of the individual, which is in a different view, it can indicate a data modeling that is important in the design of the database. Even if the user has a need and a different perspective. The designer can be formatted to suit the user. All applications that designers and users. To expand or develop the format of the data, there are several types which are designed to be appropriate to use, focusing on the purpose and effectiveness of direct use. In the view of users If the management system is an easy-to-identify data. Reduce system development that might be causing the problem. Make a specific representation from the external point of view, the system lets work it out quickly. Quality Reduction of errors per job. It also helps in storing and processing data. Used effectively in accordance with the purpose for which the user wants to continue.
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