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An enhanced approach for fuzzy queries in databases / Adel Abdelsabour Ahmad Aly ; Supervised Hesham Hefny , Ahmed Gadallah

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Adel Abdelsabour Ahmad Aly , 2015Description: 132 Leaves : charts ; 30cmOther title:
  • أسلوب محسن للإستعلامات الفازية في قواعد البيانات [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Institute of Statistical Studies and Research - Department of Computer and Information Science Summary: Generally, users often have vague or imprecise criteria when searching databases. Unfortunately, such imprecise criteria can{u2019}t be represented using traditional structured query language SQL. On the other hand, the user searching criteria may depend on the current state of the database which is not supported in traditional SQL. This thesis presents a flexible fuzzy-based approach for human-like querying of relational databases. Such an approach supports queries that can use both of stationary and non-stationary fuzzy terms. A stationary fuzzy term has a fixed definition. On the other hand, a non-stationary fuzzy term has a dynamic definition reflecting changes in the current database state or in the user profile. Also, traditional join between database relations represents one of the most important features of relational database model. Unfortunately there are some queries that are based on imprecise joining conditions which can{u2019}t be represented using traditional joining in relational databases. So the proposed fuzzy query approach handles such problems by allowing fuzzy join between database relations. Also, the proposed fuzzy query approach supports many other query structures like nested, complex and correlated fuzzy queries
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.18.02.M.Sc.2015.Ad.E (Browse shelf(Opens below)) Not for loan 01010110068826000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.18.02.M.Sc.2015.Ad.E (Browse shelf(Opens below)) 68826.CD Not for loan 01020110068826000

Thesis (M.Sc.) - Cairo University - Institute of Statistical Studies and Research - Department of Computer and Information Science

Generally, users often have vague or imprecise criteria when searching databases. Unfortunately, such imprecise criteria can{u2019}t be represented using traditional structured query language SQL. On the other hand, the user searching criteria may depend on the current state of the database which is not supported in traditional SQL. This thesis presents a flexible fuzzy-based approach for human-like querying of relational databases. Such an approach supports queries that can use both of stationary and non-stationary fuzzy terms. A stationary fuzzy term has a fixed definition. On the other hand, a non-stationary fuzzy term has a dynamic definition reflecting changes in the current database state or in the user profile. Also, traditional join between database relations represents one of the most important features of relational database model. Unfortunately there are some queries that are based on imprecise joining conditions which can{u2019}t be represented using traditional joining in relational databases. So the proposed fuzzy query approach handles such problems by allowing fuzzy join between database relations. Also, the proposed fuzzy query approach supports many other query structures like nested, complex and correlated fuzzy queries

Issued also as CD

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