A global identifier is used to link multiple references to the same entity across different systems or datasets.
Here's why:
* Purpose of Global Identifier:
* Unique Identification: Provides a unique identifier that can be used to recognize the same entity across disparate systems and datasets.
* Consistency: Ensures that different references or records pointing to the same entity are consistently identified and managed.
* Linking Equivalent References:
* Equivalent References: Global identifiers link references that are equivalent, meaning they represent the same real-world entity even if the data is stored differently in various systems.
* Entity Resolution: Helps in resolving different records to a single entity, ensuring data consistency and accuracy.
* Example:
* Customer Records: A customer might be listed in different systems (CRM, billing, support) with slightly different details. A global identifier links these records to recognize them as the same customer.
* References:
* Data Management Body of Knowledge (DMBOK), Chapter 7: Master Data Management
* DAMA International, "The DAMA Guide to the Data Management Body of Knowledge (DMBOK)"