Date Added: Jan 2013
Data is the central asset of today's dynamically operating organization and their business. This data is usually stored in database. A major consideration is applied on the security of that data from the unauthorized access and intruders. Data encryption is a strong option for security of data in database and especially in those organizations where security risks are high. But there is a potential disadvantage of performance degradation. When the authors apply encryption on database then they should compromise between the security and efficient query processing. It allows the users to query over the encrypted column directly without decrypting all the records. It's improves the performance of the system.