Concurrency Lock Issues in Relational Cloud Computing

The widespread popularity of Cloud computing as a preferred platform for the deployment of web applications has resulted in an enormous number of applications moving to the cloud, and the huge success of cloud service providers. Due to the increasing number of web applications being hosted in the cloud, and the growing scale of data which these applications store, process, and serve – scalable data management systems form a critical part of cloud infrastructures. There are issues related to the database security while database is on cloud. The major challenging issues are multi-tenancy, scalability and the privacy. This paper focuses on the problems faced in the data security of Relational Cloud. The problems faced by various types of tenants and the type of access into the database makes a rework on the security of data, by analyzing proper locking strategies on the records accessed from the database. Data security in cloud computing addresses the type of access mode by the users (for analytical or transaction purpose) and the frequency of data access from the physical location (in shared or no-shared disk mode). Accordingly, the various data locking strategies are studied and appropriate locking mechanism will be implemented for real-time applications as in e-commerce. Keywords: Relational Cloud, Multi-tenant, two-phase locking, concurrency control, data management