Specific Saas Services In The Field Of Research And Application

With the constantly development of information technology, many constructions also have more the informationization needs. However, due to the lacking of advanced hardware and software equipments, professional and technical personnel and funding to maintain, which resulting in many industries fall behind in the information construction. While the emergence of SaaS (Software as a Service) makes these industries see a new dawn.The SaaS is a new online application mode, which sees the software as a service form to provide online services users. These services are deployed in servers of the SaaS service provider, and users to rent the services according to the actual requirement and pay for the services in accordance with the time rent the service. The users only have the right to use the servers, and the ownership of the servers belongs to the services provider. The service providers have the full powers to manage and maintain the services and provide a variety of personalized services to meet user requirements, so the users can enjoy the convenience that brought by these services at anytime and anywhere.The DSSaaS (Domain Specific Software as a service)'s features, basic requirement, feasibility and necessity are put forward based on the research of the traditional architecture of the SaaS, maturity model and related technology. The relationship and differences between the two architectures are got by analyzing.According to the analysis and research of domain-specific, colleges are set in the paper, and the current status of the colleges is analyzed to indicate the problems existing in the process of information construction. How the use the SaaS model in the colleges is concretely elaborated in the paper, and a relatively complete solution and deployment structure are given in the paper, too. Finally, the influence of using the SaaS is analyzed, too. In the paper, a new multi-user data model, namely mixed data model is proposed aiming at the colleges. The characteristics of the data model are introduced in detail. The authentication and authorization model are put forward for the colleges, and an example is used to illustrate the application of the SaaS services in the colleges.