• Shilpi Chaubey
• Dr. S. M. Ghosh

A transaction is an execution of a set of programs that access shared recoverable resources (e.g., data items).A resource is recoverable if its state, as viewed by the transaction when first accessing this resource, can be restored during the transaction, if has been modified by the transaction. A distributed Transaction involves several (more than one) processes that may access different recoverable resources. In distributed transactional database systems entities merge together to form proofs of authorizations which are justified by collections of certified credentials. Due to the risk of having the authorization policies or under the user credentials which are in the inconsistent states over extended time periods these proofs and credentials may be evaluated.

Distributed transactions, consistency, two-phase commit protocol, atomic commit protocol

"Survey Paper on Improved Transactional Security in Cloud Computing", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.2, Issue 3, page no.685-689, March-2015, Available :http://www.jetir.org/papers/JETIR1503056.pdf

"Survey Paper on Improved Transactional Security in Cloud Computing", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.2, Issue 3, page no. pp685-689, March-2015, Available at : http://www.jetir.org/papers/JETIR1503056.pdf