Data obtained from foreign data sources often come with only super cial structural information, such as relation names and attribute names. Other types of metadata that are important for e ective integration and meaningful querying of such data sets are missing. In particular, relationships among attributes, such as foreign keys, are crucial metadata for understanding the structure of an unknow...

PARIS (Personal Archiving and Retrieving Image System) is an experiment personal photograph library, which includes more than 80,000 of consumer photographs accumulated within a duration of approximately five years, metadata based on our proposed MPEG-7 annotation architecture, Dozen Dimensional Digital Content (DDDC), and a relational database structure. The DDDC architecture is specially desi...

Both structured and unstructured data, as well as structured data representing several different types of tuples, may be integrated into a single list for browsing or retrieval. Data may be arranged in the Gray code order of the features and metadata, producing optimal ordering for browsing. We provide several metrics for evaluating the performance of systems supporting browsing, given some con...

This paper deals with the problem of modeling Web information resources using expert knowledge and personalized user information for improved Web searching capabilities. We propose a “Web information space” model, which is composed of Web-based information resources (HTML/XML [Hypertext Markup Language/Extensible Markup Language] documents on the Web), expert advice repositories (domain-expert-...

In this paper we suggest the novel URI scheme db for identifying not only databases, but also their schema and data components like tables or columns. One of the features of this scheme is that it may not only be used for relational database systems, but for virtually any type of database or data source. We therefore have combined the advantages of both global uniqueness of URIs and the high fl...

We propose a new approach to accessing databases through the Web that is based on the WebDAV protocol (Web−based Distributed Authoring and Versioning). This paper introduces an extensible framework for WebDAV−based authoring of databases, whether relational or object−oriented, called WebDAD. WebDAD is a mapping of SQL database operations onto an HTTP URL namespace, and WebDAV protocol operation...