68. A system for mapping a business data schema into a generic data schema, the system comprising: a memory for storing the business data schema, wherein the business data schema represents at least one type of business data instance in terms of alphanumeric values and links to business data instances, and including a plurality of generic instance mappings; a mapping generator for defining a mapping from the business data schema into the generic data schema a mapping analyzer for representing the mapping from the business data schema into the generic data schema in terms of the generic instance mappings; and a transformation generator for deriving a transformation from first data conforming with the business data schema into second data conforming with the generic data schema, wherein the transformation is based on the generic instance mappings.
81. The system of claim 68 further comprising a transformation generator for deriving a transformation from the business data schema into a second business data schema, using results of said mapping analyzer.