It's one of the integration problems that most of the big palyers in the industry have pretty much left untouched, Anyone working in the data integration / data warehousing industy understands that when you build a data warehouse, you have to create these complex pre-ETL source mappings before the ETL developers start work. The way most organizations do this is with spreadsheets. Every organization has an exorbitant amount of spreadsheets that they use to document this stuff. Once…