Z. Falahiazar, M. Teshnelab, M. Rohani, L. Falahiazar, Optimizing an Intrusion Tolerant Database System Using Neural Network, International Journal of Soft Computing, Volume 7,Issue 5, 2012, Pages 224-234, ISSN 1816-9503, ijscomp.2012.224.234, (https://makhillpublications.co/view-article.php?doi=ijscomp.2012.224.234) Abstract: Traditional database security mechanisms focus on either protection or prevention. However, these mechanisms have not any strategy in the presence of successful attacks. To solve this problem, the Intrusion Tolerant Database System (ITDB) was introduced. ITDB uses the new generation of database security mechanisms to guarantee specified levels of data availability, integrity and confidentiality in the presence of successful attacks. These mechanisms include attack isolation and multiphase damage confinement. In this study, researchers will present a practical model to utilize the combination of intrusion tolerance techniques for managing the ITDB architecture. Using this practical model, researchers will be able to secure the system’s required integrity and availability levels considering the changes in the environment. Researchers will also introduce an intelligent method for determining the significance degrees of data objects in the optimized attack isolation technique. Keywords: intrusion detection;database security;Intrusion tolerance;attack isolation;damage confinement;neural network