Research On The Conversion Of Documents And Data In Heterogeneous Information System

Information system referred to as IS. By the information collection, information retrieval, processing, information transmission, information storage and information relating to the use of the system components。Separate the information stored in information systems is not complete and is single, only the exchange of information in order to enrich the integrity of the information. However, the existence of information systems in various fields of social life, the direction of development of information systems is the diversification and specialization to information sharing and information systems between data and document conversion, has become a topic to be addressed now. How to solve the information exchange process of the various problems so that a variety of different data types of the smooth exchange of information so that information resources can be fully utilized, the promotion of human social, political, economic, cultural, life development, is our basic starting point for research.Data conversion is the exchange and sharing of information is based on a data structure will be converted to another data structure, a file format is converted to other file formats. Only the data for data conversion, to achieve heterogeneous systems to exchange data and documents in order to play the original data continuity and vitality, and expand the application of data and documents and scope of the field , better use of existing information resources, so that kinds of data does not result in waste of resources.In this paper, the format of data and standards for analysis. Different cells produce different data Type, can be divided into structured, semi-structured and unstructured data types of three. The three basic data structure contains all the data types at the present stage.Secondly, this paper, different information systems between data and document exchange, there are two ways of its classification. The first one is based on real-time data conversion, conversion into real-time and non real-time conversion Real-time data conversion system is a data source as a system to provide other data services, the service system to do real-time access to data conversion and processing, with a view to users of the system. Non-real-time data transfer refers to the two information systems, because the output data types and data formats are different, can not directly identify the other system, and do not need to convert the data immediately. Through a number of technical means to carry out data conversion, we can not directly used in different information systems.The second method is based on conversion into intermediate data format through conversion and direct conversion of data in different formats. To compare the two methods, the two different data formats efficient direct conversion, direct conversion and the negative effects (brought about by noise, were forced to discard a small amount of data, was forced to reduce the degree of structure) lower,In other words, the original format of the data to the target format of the mapping data will be maintained better. However, off-the-shelf tools to help the possibility of direct conversion is not great, and often the need for the source format to target specifically the preparation of the format conversion process. The preparation of special conversion process can not be used in other occasions the conversion. This direct data transfer for the preparation of more difficult, the majority of information systems is provided by the manufacturer.Finally, this paper, the development trend of information systems on the Mashup of this new technology of information integration,The principle and mode of analysis, and examples of their work process analysis, the inadequacy of its existence。Finally, this paper, the development trend of information systems on the Mashup of this new technology of information integration,the principle and mode of analysis, and examples of their work process analysis, the inadequacy of its existence. However, due to restrictions on the level of individual skill , temporarily unable to give satisfactory solutions.Based on the commonly used method of data conversion using the model method, functional analysis and case study,research methods, such as research method to analyze and make some of these technologies on the basis of the data conversion method. Data conversion for the current technology, the design of a data conversion integrated system model, but use different data formats can be between users of the data exchange and data sharing.. This article is about the study, with the development of information, information sharing and conversion has increasingly become,Information system in urgent need of the user's problem to be solved. Information system the existence of barriers to data exchange, making the slow process of information sharing. The only real barrier-free information exchange , information sharing can promote development and social progress will follow up quickly.