عنوان المقالة:تحديد أماكن منابع البيانات وأمثلة الاستعلامات الموزعة في بيئة ند لند (P2P) Localisation de sources de données et optimisation de requêtes réparties en environnement pair-à-pair
د. رداد الكنج | Raddad Al King, PhD | 8598
- نوع النشر
- أطروحة دكتوراه
- المؤلفون بالعربي
- الملخص الانجليزي
- In our thesis, we propose an approach for processing SQL queries in a P2P environment. To solve the semantic heterogeneity between local schemas, our approach is based on domain ontology and on similarity formulas. As for the structural heterogeneity of local schemas, it is solved by the extension of a query routing method (i.e. Chord protocol) with Structure Indexes. Concerning the query optimization problem, we propose to take advantage of the data source localization phase to obtain all metadata required for generating a close to optimal execution plan. Finally, in order to show the feasibility and the validity of our propositions, we carry out performance evaluations and we discuss the obtained results
- تاريخ النشر
- 11/05/2010
- الناشر
- Université Toulouse III - Paul Sabatier
- رقم المجلد
- رقم العدد
- رابط خارجي
- http://thesesups.ups-tlse.fr/912/
- الكلمات المفتاحية
- P2P, Databases, Schema Heterogeneity, DHT, Ontology,