Integration: An infrastructure for enabling efficient data sharing across incompatible applications that evolve independently in a coordinated manner to serve the needs of the enterprise and its stakeholders.
John G. Schmidt and David Lyle – Lean Integration
Stocking the data warehouse with data is often the most time consuming task in making data warehousing and business intelligence a success. In the overall scheme of things, data integration often requires about 70 percent of the total effort.
Integrating data for the data warehouse includes:
• Making data integration architecture ...