4. Uniqueness of information location
Information is managed at a single point in the information system.
Copies of information may be kept for archiving purposes, for cross-checking in delayed time, or for other reasons. These copies are not directly accessible via the information system's repositories or processes.
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The aim of this principle is to ensure that the integrity and freshness of the information in the information system is maintained (figure 4).
It's important to distinguish the concept of "data" from that of "information": the same data can correspond to different types of information. For example, a customer's current address and the address indicated on an invoice may be...
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Uniqueness of information location
Single location for activity management
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