An object oriented approach to Web-based applications design
Theory and Practice of Object Systems - Special issue objects, databases, and the WWW
Integrating database and dialogue design
Knowledge and Information Systems
On the unification of query algebras and their extension to rational tree structures
ADC '01 Proceedings of the 12th Australasian database conference
Entity-Relationship Modeling: Foundations of Database Technology
Entity-Relationship Modeling: Foundations of Database Technology
Design and Maintenance of Data-Intensive Web Sites
EDBT '98 Proceedings of the 6th International Conference on Extending Database Technology: Advances in Database Technology
Modeling Interaction and Media Objects
NLDB '00 Proceedings of the 5th International Conference on Applications of Natural Language to Information Systems-Revised Papers
A Conceptual-Modeling Approach to Extracting Data from the Web
ER '98 Proceedings of the 17th International Conference on Conceptual Modeling
Designing Well-Structured Websites: Lessons to Be Learned from Database Schema Methodology
ER '98 Proceedings of the 17th International Conference on Conceptual Modeling
Conceptual Design and Development of Information Services
ER '98 Proceedings of the 17th International Conference on Conceptual Modeling
E/R Based Scenario Modeling for Rapid Prototyping of Web Information Services
ER '99 Proceedings of the Workshops on Evolution and Change in Data Management, Reverse Engineering in Information Systems, and the World Wide Web and Conceptual Modeling
Formalizing the Specification of Web Applications
ER '99 Proceedings of the Workshops on Evolution and Change in Data Management, Reverse Engineering in Information Systems, and the World Wide Web and Conceptual Modeling
Web Application Models Are More Than Conceptual Models
ER '99 Proceedings of the Workshops on Evolution and Change in Data Management, Reverse Engineering in Information Systems, and the World Wide Web and Conceptual Modeling
Modeling Interactive Web Sources for Information Mediation
ER '99 Proceedings of the Workshops on Evolution and Change in Data Management, Reverse Engineering in Information Systems, and the World Wide Web and Conceptual Modeling
EDBT '98 Proceedings of the 6th International Conference on Extending Database Technology: Advances in Database Technology
Object-oriented Web Engineering for Large-scale Web Service Management
HICSS '99 Proceedings of the Thirty-second Annual Hawaii International Conference on System Sciences-Volume 5 - Volume 5
Determinants of Successful Website Design: Relative Importance and Recommendations for Effectiveness
HICSS '99 Proceedings of the Thirty-second Annual Hawaii International Conference on System Sciences-Volume 5 - Volume 5
Design of Data-Intensive Web-Based Information Services
WISE '00 Proceedings of the First International Conference on Web Information Systems Engineering (WISE'00)-Volume 1 - Volume 1
Conceptual modelling of web information systems
Data & Knowledge Engineering
Tutorial 4: reasoning about web information systems
ER'05 Proceedings of the 24th international conference on Perspectives in Conceptual Modeling
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The concept of media object is known as a view-centered approach to enable the development of maintainable web-based information systems. It allows tight linkages between databases, dialogues, processes and flexible representations at the user interface. The problem is to extend this approach by adequate query facilities.In order to solve this problem a query algebra will be defined by operations induced from a type system that are complemented by a simple generalized join-operation. It is shown that such an algebra is able to capture basic operations as known from relational algebra, aggregate operations as known from SQL and restructuring operations such as nesting and unnesting. Furthermore, the creation of URLs is supported.The focus of the paper is on the content of media objects. For the presentation of query results via web pages the metaphor of information container is exploited.