Architectural requirements for regional library & information service system: An approach to data integration in cloud

Under the real information environment, because the time or department to develop information system is different, there are always many heterogeneous information systems run at the different software and hardware platforms which are executed simultaneously. The separate and closed data source in the system makes data hard to be communicated, shared and fused among the systems. Data integration using traditional methods, which is to integrate and to exchange data among data sources according to operation system or database, will cost much time and money to deal with complexity and to keep business being operated. An approach to data integration in cloud the paper proposes uses service features of cloud computing and supports data sharing in many application fields. It is independent of all databases and data sources and it is characteristic of remote storage and dynamic data integration of data sources.