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The medical data of a patient are often disseminated over multiple sites
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səhifə | 27/48 | tarix | 03.01.2022 | ölçüsü | 446 b. | | #48483 |
| The medical data of a patient are often disseminated over multiple sites - access rights/authentication problem, collection/integration of data into partial views, identification of data/users
Medical (meta-)data are complex and not yet (fully) standardized
Why is it so difficult ? Why is it so difficult ? - multiple administrative domains
- very sensitive data => security/privacy issues
- wide distribution
- unpredictability
- relationship with data replica
- heterogeneity
- dynamicity (permanent production of large volumes of data)
Centralized data warehouse ? - Not realistic at a large scale and not acceptable
A proposition [Wehrle’s thesis]: virtual data warehouses on the grid Components: - a federated schema
- a set of partial views (“chunks”) materialized at the local system level
Advantages
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