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--- data_quality_dimension:uniqueness [2023/02/21 20:08]
peter
+++ data_quality_dimension:uniqueness [2024/03/08 13:33] (current)
@@ Line 6: / Line 6: @@
   - Uniqueness of primary keys is the degree to which [[data_concept:primary key|primary keys]] occur only once in a [[data_concept:data file|data file]].
-===Note(s)===
+===Note===
-In general, duplicates should be deduplicated.
+In general, double [[data_concept:data record|data records]] should be deduplicated.
 ===Relation(s)===
-Uniqueness can be a [[data_quality_dimension:characteristic|characteristic]] of [[data_concept:data record|data records]], the mapping of [[data_concept:object|objects]] in a [[data_concept:data file|data file]] or [[data_concept:primary key|primary keys]].
+|Uniqueness| is a [[general_term:characteristic|characteristic]] of |[[data_concept:data record|data records]]|
+|Uniqueness| is a [[general_term:characteristic|characteristic]] of the mapping of [[data_concept:object|objects]] in a |[[data_concept:data file|data file]]|
+|Uniqueness| is a [[general_term:characteristic|characteristic]] of |[[data_concept:primary key|primary keys]]|
 ===Example(s)===
   - This article appears twice in a [[data_concept:data file|data file]] under the same article number. This is easy to detect by checking on double article numbers.\\
   - This article appears twice in a [[data_concept:data file|data file]] under a different article number. This can only be discovered by comparison of other [[data_concept:data element|data elements]] than the article number.\\
-  -  Two different articles appear  under the same article number in a [[data_concept:data file|data file]]. This can only be discovered by checking double article numbers and then compare other  [[data_concept:data element|data elements]] than article number.
+  -  Two different articles appear  under the same article number in a [[data_concept:data file|data file]]. This can only be discovered by checking double article numbers and then compare other  [[data_concept:data element|data elements]] than article number before deduplicating.
 ===Reference(s)===
 DAMA NL (2020). Dimensions of Data Quality (DDQ). Research paper. https://www.dama-nl.org/wp-content/uploads/2020/09/DDQ-Dimensions-of-Data-Quality-Research-Paper-version-1.2-d.d.-3-Sept-2020.pdf
+{{tag>All DataQualityDimension}}

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