Supporting Predicate-Window Queries in Data Stream Management Systems (2008)
The window query model is widely used in data stream management systems where the focus of a continuous query is limited to a set of the most recent tuples. In this dissertation, we show that an...
Thanaa M. Ghanem, Thanaa M. Ghanem, Moustafa A. Hammad, Mohamed F. Mokbel, Walid G. Aref, Ahmed K
Seeking a position in Computer Science to utilize my experience in the following areas: systemsoriented research and implementation, databases, data stream management systems, continuous query...
Amdb A Design, Tool Access, Methods Marcel Kornacker, Mehul Shah, Joseph M. Hellerstein, Michael Cammert, ...
is published quarterly and is distributed to all TC members. Its scope includes the design, implementation, modelling, theory and application of database systems and their technology. Letters,...
Exploiting predicate-window semantics over data streams (2008)
Thanaa M. Ghanem, Walid G. Aref, Ahmed K. Elmagarmid
The continuous sliding-window query model is used widely in data stream management systems where the focus of a continuous query is limited to a set of the most recent tuples. In this paper, we show...
Mohamed G. Elfeky, Thanaa M. Ghanem, Vassilios S. Verykios, Ahmed R. Huwait, Ahmed K. Elmagarmid
Data cleaning is a vital process that ensures the quality of data stored in real-world databases. Data cleaning problems are frequently encountered in many research areas, such as knowledge discovery...
Supporting views in data stream management systems (2007)
Due to their effectiveness, views are attractive to data stream management systems (DSMSs). Prior work on languages to express continuous queries over data streams has defined a stream as a sequence...
Incremental Evaluation of Sliding-Window Queries over Data Streams (2006)
Thanaa M. Ghanem, Moustafa A. Hammad, Mohamed F. Mokbel, Walid G. Aref, Ahmed K. Elmagarmid
Two research efforts have been conducted to realize sliding-window queries in data stream management systems, namely, query re-evaluation and incremental evaluation. In the query re-evaluation...
Incremental Evaluation of Sliding-Window Queries over Data Streams (2006)
Thanaa M. Ghanem, Moustafa A. Hammad, Mohamed F. Mokbel, Walid G. Aref, Senior Member, Ahmed K. Elmagarmid, ...
Abstract—Two research efforts have been conducted to realize sliding-window queries in data stream management systems, namely, query reevaluation and incremental evaluation. In the query...
Incremental Evaluation of Sliding-Window Queries over Data Streams (2006)
Thanaa M. Ghanem, Moustafa A. Hammad, Mohamed F. Mokbel, Walid G. Aref, Senior Member, Ahmed K. Elmagarmid, ...
Abstract—Two research efforts have been conducted to realize sliding-window queries in data stream management systems, namely, query reevaluation and incremental evaluation. In the query...
Spatio-temporal Access Methods (2003)
Mohamed F. Mokbel, Thanaa M. Ghanem, Walid G. Aref
The rapid increase in spatio-temporal applications calls for new auxiliary indexing structures. A typical spatio-temporal application is one that tracks the behavior of moving objects through...
Quality Assurance of Government Databases (2002)
Mohamed G. Elfeky, Ahmed K. Elmagarmid, Thanaa M. Ghanem
Data cleaning is a vital process that ensures the quality of data stored in real-world databases. The process of identifying the record pairs that represent the same entity (duplicate records),...
Quality Assurance of Government Databases (2002)
Mohamed G. Elfeky, Ahmed K. Elmagarmid, Thanaa M. Ghanem
Data cleaning is a vital process that ensures the quality of data stored in real-world databases. The process of identifying the record pairs that represent the same entity (duplicate records),...