| 2016 | SSDBM | Demonstrating KDBMS: A Knowledge-based Database Management System. | Mohamed E. Khalefa, Sameh S. El-Atawy |
| 2012 | SSDBM | Aggregating and Disaggregating Flexibility Objects. | Laurynas Siksnys, Mohamed E. Khalefa, Torben Bach Pedersen |
| 2011 | ICDE | PrefJoin: An efficient preference-aware join operator. | Mohamed E. Khalefa, Mohamed F. Mokbel, Justin J. Levandoski |
| 2010 | CIKM | Skyline query processing for uncertain data. | Mohamed E. Khalefa, Mohamed F. Mokbel, Justin J. Levandoski |
| 2010 | CIKM | Preference query evaluation over expensive attributes. | Justin J. Levandoski, Mohamed F. Mokbel, Mohamed E. Khalefa |
| 2010 | ICDE | FlexPref: A framework for extensible preference evaluation in database systems. | Justin J. Levandoski, Mohamed F. Mokbel, Mohamed E. Khalefa |
| 2010 | SIGMOD | A demonstration of FlexPref: extensible preference evaluation inside the DBMS engine. | Justin J. Levandoski, Mohamed F. Mokbel, Mohamed E. Khalefa, Venkateshwar R. Korukanti |
| 2008 | ICDE | Skyline Query Processing for Incomplete Data. | Mohamed E. Khalefa, Mohamed F. Mokbel, Justin J. Levandoski |
| 2008 | ICDE | PermJoin: An Efficient Algorithm for Producing Early Results in Multi-join Query Plans. | Justin J. Levandoski, Mohamed E. Khalefa, Mohamed F. Mokbel |