This paper analyzes the interrelated topics of data warehousing and datamining. The author begins by defining the terms, then giving a brief overview of how and why the two concepts emerged. The author then discusses some of the issues involved when implementing a data warehousing/datamining application. Then, the author launches into a description of datamining and why it is an essential aspect of data warehousing. After a discussion of why an implementation is difficult and why man fail, the author then assesses how the two concepts may be of interest to those in the food service industries. The author closes the piece by discussing the case of Pizzeria Uno, a casual dining franchise which became more profitable from data warehousing and datamining.