... | @@ -4,13 +4,13 @@ Perhaps the most central and unique feature of the PEP system is that different |
... | @@ -4,13 +4,13 @@ Perhaps the most central and unique feature of the PEP system is that different |
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Data storage systems usually assign unique identifiers to the entries they store. For example, (relational) database tables typically include an `Id` column:
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Data storage systems usually assign unique identifiers to the entries they store. For example, (relational) database tables typically include an `Id` column:
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| Id | Name | BankAccountNr | LastDoctorVisit | ... |
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| Id | Name | HatStyle | BankAccountNr | LastDoctorVisit | BloodPressure | ... |
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| --- | ------- | ------------------ | --------------- | --- |
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| --- | ------- | -------------- | ------------------ | --------------- | ------------- | --- |
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| 1 | Scrooge | NL50ABNA3690200148 | 1843-12-19 | ... |
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| 1 | Scrooge | top hat | NL50ABNA3690200148 | 1843-12-19 | 131/77 | ... |
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| 2 | Donald | <NULL> | 2021-01-06 | ... |
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| 2 | Donald | sailor cap | *<none>* | 2021-01-06 | 141/76 | ... |
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| 3 | Ariel | DK3650519625773963 | 1989-11-17 | ... |
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| 3 | Ariel | *<none>* | DK3650519625773963 | 1989-11-17 | 119/64 | ... |
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| 4 | Eric | DK3650519625773963 | 2013-11-19 | ... |
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| 4 | Eric | crown | DK3650519625773963 | 2013-11-19 | 122/62 | ... |
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| ... | ... | ... | ... | ... |
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| ... | ... | ... | ... | ... | ... | ... |
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Identifiers are commonly generated when the entry is first created. Once available, the identifier is stored *within* the entry and becomes *part of* the data. Anyone with access to the data is usually granted access to the `Id` column as well, simply because it is needed to uniquely identify a record for many data manipulation tasks. The identifier also serves as a pseudonym for the entry it refers to: regardless of access to other data such as `Name`, a subject can be referred by its `Id`.
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Identifiers are commonly generated when the entry is first created. Once available, the identifier is stored *within* the entry and becomes *part of* the data. Anyone with access to the data is usually granted access to the `Id` column as well, simply because it is needed to uniquely identify a record for many data manipulation tasks. The identifier also serves as a pseudonym for the entry it refers to: regardless of access to other data such as `Name`, a subject can be referred by its `Id`.
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