ocr: A Three Tier Model for Automated Purchasing & Business to Business Integration Back End Middle Tier Client Data Aggregation & Integration Data Manipulation Business Logic & Display Document Format Conversion Local Repository le (Supplier 1 Parallel Queries Query XML Data IE4 Purchasing Submit Order Agent EwebMethods) XML B2B Supplier 2) Integration Query Server XML Data IE4 - à - . Ter Agent's - a - - - - - Order. Approved Manager - - - - - - - - - - - Purchase - a Selected Items 4 à Supplier 3 Corporate Web Catalog Suppliers Server
