Enterprise Data Warehouse Solution for DHS Modernization Project
Challenge:
- To develop an enterprise wide business and reference data warehouse for the purpose of generating detail and summary reports
- To source over 7 terabytes of data from the Datacom Legacy environment
- To create relational data marts using Oracle and DB2 databases
Solution:
- Designed the new relational Operational Data Store (ODS) and data marts using the Erwin COTS product
- Identified the sources of data
- Obtain data from the mainframe
Results:
- Defined the source and targeted mapping business rules to obtain the data from the mainframe
- Loaded data into the back-end systems that included: SAP R/3, SAP CRM, DB2 Data Warehouse, and EMC Documentum
- Developed an enterprise wide business and reference data warehouse that generates detailed and summary reports


