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KuyaMoHirowo (talk | contribs) m Fixed typo |
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* "Business rules, specific to how things are done in a particular place, are often fixed in the structure of a data model. This means that small changes in the way business is conducted lead to large changes in computer systems and interfaces".<ref name="MW99"/>
* "Entity types are often not identified, or incorrectly identified. This can lead to replication of data, data structure, and functionality, together with the attendant costs of that duplication in development and maintenance".<ref name="MW99"/>
* "Data models for different systems are arbitrarily different. The result of this is that complex interfaces are required between systems that share data. These interfaces can account for between
* "Data cannot be shared electronically with customers and suppliers, because the structure and meaning of data has not been standardized. For example, engineering design data and drawings for process plant are still sometimes exchanged on paper".<ref name="MW99"/>
The reason for these problems is a lack of standards that will ensure that data models will both meet business needs and be consistent.<ref name="MW99"/>
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