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Aug 31
2009
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A major issue in information systems management is avoiding data redundancy, that is, ensuring that each fact is represented in a single place. Data redundancy does not origin only from duplicated records within a database, but perhaps more frequently, from a common practice to store partially overlapping entries in multiple databases or information systems. For instance, it often happens that supplier contact addresses are stored in the procurement, billing, logistics and technical support subsystems though it would make sense to store this address at one subsystem and refer to it from others by means of a supplier identifier.
