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 | 8599
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,
رجوع