Last activity: 21/03/2016, 10:28
5.1.6 Primary keys: Determine and mark data fields
Task: * Determining the specific information which identifies data sets unambiguously if this requirement exists. These data fields will then have to be marked as primary keys. Risk: * If data fields that are supposed to serve the unambiguous identification of data sets are not marked as primary keys, duplicate entries may emerge. Example: When an insurance number can by definition be used as an identifier of data sets, this distinctive feature must also be regarded technically since otherwise more than one data set can be created with the same insurance number (i.e. duplicate entries). This…
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