The HiPAC project: combining active databases and timing constraints
ACM SIGMOD Record - Special Issue on Real-Time Database Systems
The architecture of an active database management system
SIGMOD '89 Proceedings of the 1989 ACM SIGMOD international conference on Management of data
Continuous queries over append-only databases
SIGMOD '92 Proceedings of the 1992 ACM SIGMOD international conference on Management of data
A multiparadigmatic environment for interacting with databases
ACM SIGCHI Bulletin
Enterprise JavaBeans
NiagaraCQ: a scalable continuous query system for Internet databases
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Continual Queries for Internet Scale Event-Driven Information Delivery
IEEE Transactions on Knowledge and Data Engineering
Alert: An Architecture for Transforming a Passive DBMS into an Active DBMS
VLDB '91 Proceedings of the 17th International Conference on Very Large Data Bases
Visual Query Systems: A Taxonomy
Proceedings of the IFIP TC2/WG 2.6 Second Working Conference on Visual Database Systems II
VL '95 Proceedings of the 11th International IEEE Symposium on Visual Languages
A User Interface for the Visualization and Manipulation of Arrays
VL '96 Proceedings of the 1996 IEEE Symposium on Visual Languages
Solving Display-Based Problems
VL '96 Proceedings of the 1996 IEEE Symposium on Visual Languages
A multimodal user interface for a visual programming language
A multimodal user interface for a visual programming language
A continuous spatial query processing for push-based geographic web search systems
W2GIS'07 Proceedings of the 7th international conference on Web and wireless geographical information systems
Incorporating the timeliness quality dimension in internet query systems
WISE'05 Proceedings of the 2005 international conference on Web Information Systems Engineering
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Today there is a plethora of data accessible via the Internet. The Web has greatly simplified the process of searching for, accessing, and sharing information. However, a considerable amount of Internet-distributed data still goes unnoticed and unutilized, particularly in the case of frequently-updated, Internet-distributed databases. In this paper we give an overview of WebFormulate, a Web-based visual continual query system that addresses the problems associated with formulating temporal ad hoc analyses over networks of heterogeneous, frequently-updated data sources. The main distinction between this system and existing Internet facilities to retrieve information and assimilate it into computations is that WebFormulate provides the necessary facilities to perform continual queries, developing and maintaining dynamic links such that Web-based computations and reports automatically maintain themselves. A further distinction is that this system is specifically designed for users of spreadsheet-level ability, rather than professional programmers.