Download Interoperable Database Systems (Ds-5). Proceedings of the by David K. Hsiao, Erich J. Neuhold, Ron Sacks-Davis PDF

By David K. Hsiao, Erich J. Neuhold, Ron Sacks-Davis

The proliferation of databases inside of organisations have made it central to permit powerful sharing of knowledge from those disparate database platforms. furthermore, it really is fascinating that the person structures needs to hold a definite measure of autonomy over their facts to be able to proceed to supply for his or her current functions and to aid managed entry to their info. therefore it turns into essential to increase new suggestions and construct new performance to interoperate those self sufficient database structures and to combine them into an total details process. learn into interoperable database platforms has complex considerably over fresh years based on this want. The papers provided during this quantity disguise a large spectrum of either theoretical and pragmatic concerns regarding the semantics of interopable database structures. themes coated contain ideas to help the interpretation among database schema and among database languages; object-oriented frameworks for helping interoperability of heterogeneous databases, wisdom base integration and methods for overcoming schematic discrepancies in interoperable databases. furthermore, there are papers addressing problems with safety transaction processing, facts modelling and item id in interoperable database structures. it really is was hoping the booklet will signify a invaluable collective contribution to analyze and improvement within the box for database researchers, implementors, designers, software developers and clients alike

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Extra info for Interoperable Database Systems (Ds-5). Proceedings of the IFIP Wg2.6 Database Semantics Conference on Interoperable Database Systems (Ds-5), Lorne, Victoria, Australia, 16–20 November, 1992

Example text

To date, most such projects have failed. Each database has its own definition of customer. The definition is used and depended upon by many applications. Even if the definition could be altered so that the data could be migrated to the new database, there would be a massive problems of dealing with the old applications. , regulatory, legal) that are inherently inconsistent. The scale of the customer database completely defeats all proposed global schema, integrated schema, and conceptual modelling solutions.

1, eight ISs each provide a specific function. The problem with the service order transaction was that the systems were never built to cooperate. There was little focus on the higher level function that they now collectively support. The perspective was a bottom-up view of the business, focusing on specific functions. In process re-engineering, the focus is exclusively on the critical business processes, the lifeblood of your organization. In the above example, it is telephone service provisioning.

In one of the above case studies, we found 1,200 undocumented utilities/small systems that use one mission-critical IS. 27 6) W e Want It All — Users will not be satisfied with a new IS unless it offers them substantially more than the old IS. Cost justification and other organizational incentives argue for more than the old IS provided. It is easier to justify continual, expensive fixes than a costly rewrite with projected annual savings. 7) Jus' Load 'Er U p : Migration and Data Conversion — Once the new IS has been successfully implemented, you must migrate it into the operational environment.

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