In this paper, we address the problem of propagating data updates to a large number of mobile clients. Typically, mobile clients operate autonomously, i.e., disconnected from data servers, for prolonged periods of time relying on locally replicated corporate data (e.g., database views, file systems). From time to time, they need to refresh their replicas with data changes registered at a centra...

the aim of this research is to consider the quality of services provided by kerman telecommunication company (ktc) from different perspective in order to keep and attract clients. in this research, the quality of services by kerman province telecommunication company in different parts such as: phone, mobile phone, data service and also the quality of presented services by serving offices due to...

With the recent increase demand for cloud services, handling clients’ needs is getting increasingly challenging. Responding to all requesting clients with no exception could lead security breaches, and since it provider’s responsibility secure not only offered services but also data, important ensure reliability. Although filtering in so common, required assure safety. In this paper, we made us...