Multimedia data has become readily available from a variety of resources, such as the Web, to users (ranging from naive to sophisticated) who need to select and to present the dat...
The DynaQuest-Framework should reduce the effort for the creation of Internet-based virtual databases. These virtual databases are a special kind of federated database systems whe...
Current crawler-based search engines usually return a long list of search results containing a lot of noise documents. By indexing collected documents on topic path in taxonomy, t...
The advent of XML as a universal exchange format, and of Web services as a basis for distributed computing, has fostered the apparition of a new class of documents: dynamic XML do...
Transaction time is the time of a database transaction, i.e., an insertion, update, or deletion. A transactiontime database stores the transaction-time history of a database and s...