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An information integration system for structured documents, Web, and databases
| Content Provider | Semantic Scholar |
|---|---|
| Author | Morishima, Atsuyuki |
| Copyright Year | 2007 |
| Abstract | Rapid advance in computer network technology has changed the style of computer utilization. Distributed computing resources over world-wide computer networks are available from our local computers. They include powerful computers and a variety of information sources. This change is raising more advanced requirements. Integration of distributed information sources is one of such requirements. In addition to conventional databases, structured documents have been widely used, and have increasing signi cance in such advanced applications as digital libraries, electronic commerce, World Wide Web, and hyper-media descriptions. Thus, integration of structured documents and conventional databases is one of the most important issues today. However, structured documents are di erent from conventional databases in their self-descriptive nature and various structural constructors. And the di erence makes the integration much di cult. This dissertation proposes an information integration system for not only iv conventional databases but also information sources containing structured documents. In particular, structured document repositories, Web, and relational databases are chosen as target information sources. Data models for integration of structured documents and relational databases are proposed. They are hybrid data models based on nested relational structures and an abstract data type for structured documents, and allow symmetric transformation between relational structures and structured documents. Utilization of such hybrid and symmetric data models is the most distinguishing point of the information integration system studied in this dissertation. A query processing and optimization scheme for the integration system which utilizes the hybrid and symmetric data models is studied. The integration system is supposed to consist of software modules which communicate with each other and distributed information sources. The scheme plans to e ciently utilize query processing capability of the information sources, such as SQL processing capability of relational databases. Also, it realizes e cient manipulation of those structured documents whose size is potentially very large. A visual user interface for the integration of structured document repositories, Web, and relational databases is proposed. In contrast to user interv faces of traditional databases, the user interface provides an interactive and visual operation framework for metadata and data, in order to cope with the largeness and complexity which arise in integration of heterogeneous and distributed information sources. In addition to the above theoretical and academic issues, basic design of a prototype system is explained. The fact that the prototype system is implementable shows the practicability of this approach. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://tsukuba.repo.nii.ac.jp/index.php?action=pages_view_main&active_action=repository_action_common_download&attribute_id=17&block_id=83&file_no=2&item_id=8683&item_no=1&page_id=13 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
