7. 2GIRDIMPLEMENTATION: AMETADATABASE 135 7. 3 UNIQUE PROPERTIES OF THE GIRD MODEL 140 7. 3. 1 The Metadatabase As an Information Resources Lnctionary 140 7. 3. 2 The metadatabase as the GlobaVEnterprise Schema 142 8 THE GLOBAL QUERY SYSTEM 145 8. 1 MODEL ASSISTED GLOBAL QUERY 145 8. l. l The Need for Metadata Support 145 8. l. 2 User Interface for Query Formulation 147 8. 1. 3 Integrated Schema for Global Query 147 8. 2 THE CONCEPTUAL MODEL 148 8. 2. 1 The Goals 149 8. 2. 2 The Defmitive Model for Metadata Requirements 149 8. 3 THE EXECUTION MODEL 156 8. 3. 1 Model Traversal 156 8. 3. 2 Rule-Base Conversion 157 8. 4 ANALYSIS 159 8. 4. 1 Metadata Modeling vs. Schema Integration 159 8. 4. 2 Conceptual Evaluation of the MGQS A~h 100 9 ADAPTIVE CONCURRENT ARCHITECTURE 163 9. 1 CONCURRENT ARCHITECTURES FOR ADAPTIVE INTEGRATION 163 9. 2 ROPE: A NEW SOFTWARE METIIOD FOR ElM 167 9. 2. l The Model of ROPE 167 9. 2. 2 The Static Structure of ROPE 169 9. 2. 3 The Dynamic Structure of ROPE 173 9. 3 THE OPERATION OF ROPE 174 9. 3. 1 Rule Processing Operations 174 9. 3. 2 Knowledge Management Operations 176 9. 4 IMPLEMENTATION: ALABORATORYEIM 177 9. 5 SATISFACTION OF ElM REQUIREMENTS 180 10 MANUFACTURING INTEGRATION 183 10. 1 INFORMATION MANAGEMENT FOR MANUFACTURING ENTERPRISE INTEGRATION 183 10. 1.