Beware of distributed database pitfalls. (Section 2: Connectivity) Molyn, Michael

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Molyn, Michael
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PC Week
Business; Computers and office automation industries; Multiuser software
The current capabilities of distributed databases are analyzed to assist in the selection of appropriate products. A database management system (DBMS), to be multiuser, must create database servers that process and transmit information. A database, to be truly distributed, must feature: location transparency; site autonomy; true referential states among data that are represented; transparent partitioning; and dynamic refreshing of replicas when a parent file is updated. Distributed applications tend to degrade processing efficiency. Users of distributed databases must take increasing responsibility for data integrity and security. Distributed applications will be needing strict conformity to standard-naming conventions for workstations and file servers. Formal database design techniques, particularly regarding the data dictionary, are key to distributed systems. Yet current products can provide minimal functionality in specialized areas only or only 75 percent of the time in general use.
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