Data Mining As One Ofmany Constituents of Health Care Has Been Used Intensively and Extensively Inmany Organizations Around the Globe As an Efficient Technique of Findingcorrelations or Patterns Among Dozens of Fields In Large Relational Databasesto Results into More Useful Health Information. In Healthcare, Data Mining Isbecoming Increasingly Popular and Essential. Data Mining Applications Cangreatly Benefits All Parties Involved In Health Care Industry. the Huge Amountsof Data Generated By Healthcare Transactions Are Too Complex and Voluminous Tobe Processed and Analyzed By Traditional Methods. Data Mining Provides Themethodology and Technology to Transform Huge Amount of Data into Usefulinformation For Decision Making. This Paper Illustratesdata Mining Will Enable Clinicians and Managers to Find Valuable New Patternsin Data, Leading to Potential Improvement of Resource Utilization and Patienthealth. As the Patterns Are Based on Recent Clinical Practice, They Representthe Ultimate In Evidence-Based Care. Healthcare Presentsunique Challenges For the Architect of a Data Warehouse. Integrated Healthsystems Are Shifting Its Focus Away from the Acute Care Setting and Movingtowards Cross-Continuum Care Management. Improving Healthcare Quality Whilereducing Costs Requires the Elimination of Unnecessary Variation In the Careprocess. This Paper Describes the Lessons Learned During the Business Casedevelopment For the Project. Topics Include Establishing the Need For a Datawarehouse, ...