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AVI
1996

A visual interface for synchronous collaboration and negotiated transactions

13 years 11 months ago
A visual interface for synchronous collaboration and negotiated transactions
: This paper introduces a visual interface for computer-supported cooperative work (CSCW). The interface is an extension of the editor interface of ESCHER, a prototype database system based on the extended non-first-normal-form data model. In ESCHER, the nested table approach is the paradigm for presenting data, where presenting includes browsing, editing and querying the database. Interaction is achieved by fingers generalising the well-known cursor concept. When several users are involved, the concept permits synchronous collaboration with the nested table acting as "whiteboard". We discuss its use in applications which require negotiated transactions, i.e. where the isolation principle of ACID-transactions gives way to negotiations. We also give examples of how interactive query formulation in a QBE-like fashion can support the collaboration. The arguments in the paper are mainly supported with screenshots taken from two applications, one of them also with non-textual data...
Lutz Michael Wegner, Manfred Paul 0002, Jens Thamm
Added 02 Nov 2010
Updated 02 Nov 2010
Type Conference
Year 1996
Where AVI
Authors Lutz Michael Wegner, Manfred Paul 0002, Jens Thamm, Sven Thelemann
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