2. The method as set forth in claim 1 , wherein said first set of data includes structured data having structural elements defining attributes of the data and content elements defining attribute values of specific items of data, and said step of first operating comprises obtaining a set of attributes by analyzing said structural elements and obtaining at least one definition of acceptable attribute values by analyzing said content elements.
2. The method as set forth in claim 1 , wherein said first set of data includes structured data having structural elements defining attributes of the data and content elements defining attribute values of specific items of data, and said step of first operating comprises obtaining a set of attributes by analyzing said structural elements and obtaining at least one definition of acceptable attribute values by analyzing said content elements. 4. The method as set forth in claim 2 , wherein said first set of data includes logged data having content elements defining attribute values of specific items of data and tag elements describing said content elements, and said step of first operating comprises obtaining a set of attributes by analyzing said tag elements and obtaining at least one definition of acceptable attribute values by analyzing said content elements.