: 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 sys...
Lutz Michael Wegner, Manfred Paul 0002, Jens Thamm...
Networks often form the core of many users’ spatial databases. Networks are used to support the rapid navigation and analysis of linearly connected data such as that found in tra...
: Rapid evolution of modern Information Systems and Process-Aware Information Systems (PAIS) in particular requires transactional execution of business logic. The paper introduces ...
We study functional and multivalued dependencies over SQL tables with NOT NULL constraints. Under a no-information interpretation of null values we develop tools for reasoning. We...