| Summary: | 碩士 === 國立成功大學 === 電機工程學系 === 88 === With the rapid growth of Internet, it is not adequate for many applications to apply HTML in presenting their data. XML is an emerging standard for data description on Internet. As we can expect in the future, there will be more and more data encoded with XML. At that time, retrieval and search on XML data will be an important issue. On observing this trend, we designed and implemented a search system based on the structural and self-descriptive features of XML documents.
In this thesis, we describe the gatherer and user interface in our XML Search System. In this system, we propose an LDAP-based Gatherer for collecting meta information about XML documents. It takes the advantage of the scalability and standard of LDAP Servers that are well developed. In addition, we apply the RDF schema to organize the meta information of the resources to be collected. By integrating the LDAP-based Gatherer and RDF technology we can realize a meta resource repository which can be used to store and retrieve meta information about resources. The XQL language is used as the basis for search query in our system. Besides the XQL-style query, we also develop a set of tools to facilitate the query for end users. Given a DTD of an XML document, the tools can generate a form-based interface for a user’s query input and then generate XQL query automatically.
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