Building Secure Data Warehouse Schemas from Federated Information Systems
نویسنده
چکیده
Introduction There are many heterogeneities among preexisting informations sources, such as DataBases (DBs), particularly semantic heterogeneities (see our chapter “Semantic Heterogeneity” in [1]). Any secure Federated Information Systems (FIS) must solve them, and deal with a): how schema levels are related to security, and b): operations on schemas to convert from level to level. We present the approach of our integrated schema architecture for both FIS and secure Data Warehousing,
منابع مشابه
Information System Architecture for Secure Data Warehousing
This paper is devoted to Secure Data Warehousing architecture and its data schemas We relate a feder ated databases architecture to Data Warehouse schemas which allows us to provide better understanding to the characteristics of every schema as well as the way they should be de ned Because of the con dentiality of data used to make decisions and the federated architecture used we also pay atten...
متن کاملAutomated Integration of Heterogeneous Data Warehouse Schemas
A federated data warehouse is a logical integration of data warehouses applicable when physical integration is impossible due to privacy policy or legal restrictions. In healthcare systems federated data warehouses are a most feasible source of data for deducing guidelines for evidence-based medicine based on data material from different participating institutions. In order to enable the transl...
متن کاملFederated Data Warehouse Approach to Support the National and International Interoperability of Healthcare Information Systems
The interoperability of medical information systems is gaining more attention as the need for the collaboration in healthcare domain increases. Consolidation of distributed patient data and building a sustainable e-health system is the major research challenge. In order to overcome institutional barriers and competences for changes across sectors, standardized data structures and corresponding ...
متن کاملBuilding a Federated Database: the Femus Experience
The increased avalaibility of various databases in large corporations has created the need to federate the databases into loosely coupled collections of autonomous systems to allow controlled sharing of information and at the same time preserve the autonomy of each participant. Traditional distributed database (DDB) research has provided the earliest solutions to information sharing in distribu...
متن کاملSchema Evolution in Federated Information Systems
Mediators – used in federated information systems – provide a homogeneous read-only access to a set of autonomous information sources. To achieve semantic integration of the heterogeneous data, correspondences between the autonomous schemas are specified manually by experts. Considering the continuous evolution of those typically long-living information systems, schema evolution is an important...
متن کامل