The Data Vault Handbook - Concepts and Applications

SATELLITE EXAMPLE

Finally, we’ll create a Patient Details Satellite that hangs from the Patient Hub. This satellite stores additional descriptive information about patients, such as their primary diagnosis and admission date.

The Patient Details Satellite captures changes in descriptive information over time, ensuring a full history of updates for each patient. By leveraging the Hash Diff, this satellite efficiently identifies when new records are in- serted. 3.1.4. CORE ENTITIES LOGICAL MODEL To conclude this section, we’ll provide a visualization of our logical model as it stands. Logical models are valuable tools for succinctly representing en- tities and their relationships, offering a clear overview of the structure and connections within the system.