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The defense date of the thesis is 2005-09-04
The current date is 2019-05-24
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URN etd-0904105-154812 Statistics This thesis had been viewed 1891 times. Download 18 times. Author Zi-jie Song Author's Email Address No Public. Department Information Management Year 2004 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 135 Title An Efficient Scheduler for Accessing Multi-Level Secure Databases in Wireless Environment Keyword wireless communication scheduling priority database security altruistic locking altruistic locking database security priority scheduling wireless communication Abstract Though the cost of the wireless communication has dropped significantly, its utilization rate is low. One of the main reasons is the concern for security. Due to the increasing threat of unauthorized access, this research focuses on the access control to secure databases. It is especially applicable in the wireless environment, which is characterized by its short access life cycle, low bandwidth and frequent communication disruption. Efficiency is another important consideration in this research.
Taking scheduling efficiency and data security into consideration, we proposed a Priority/MLS/AL framework for supporting transaction scheduling in wireless environment. In the framework we divide users into 3 priority levels and data objects into 4 security levels. Mobile stations used in the experiments are cellular phones, personal digital assistants, notebooks and personal computer. Altruistic locking are used as a mechanism for reserving data objects. A simulation of the system behavior is made. The result shows that the framework proposed will enchance scheduling performance and data security.
Advisor Committee Dr. Patrick S. Chen - advisor
none - co-chair
none - co-chair
Files Date of Defense 2005-07-29 Date of Submission 2005-09-04