| F. Schwenkreis. APRICOTS- A prototype implementation of a ConTract system: Management of the control flow and the communications system. In Proceedings of the 12th VLDB Symposium on Reliable Distributed Systems, 1993. |
....This lead to the required property of separating the workflow specification from its implementation details. The ConTract model is comprehensive in its description of how data is passed between steps and how forward recovery can be handled by making input and output steps persistent. APRICOTS [25] is a prototype implementation of the ConTract model. It does not allow for dynamic workflow and does not support the flexible integration of heterogeneous task structures. The Flex model [9, 10, 14] is an early model which relaxes the atomicity and isolation properties of its transactions. A ....
F. Schwenkreis. APRICOTS- A prototype implementation of a ConTract system: Management of the control flow and the communications system. In Proceedings of the 12th VLDB Symposium on Reliable Distributed Systems, 1993.
....This lead to the required property of separating the work ow speci cation from its implementation details. The ConTract model is comprehensive in its description of how data is passed between steps and how forward recovery can be handled by making input and output steps persistent. APRICOTS [25] is a prototype implementation of the ConTract model. It does not allow for dynamic work ow and does not support the exible integration of heterogeneous task structures. The Flex model [9, 10, 14] is an early model which relaxes the atomicity and isolation properties of its transactions. A ....
F. Schwenkreis. APRICOTS- A prototype implementation of a ConTract system: Management of the control ow and the communications system. In Proceedings of the 12th VLDB Symposium on Reliable Distributed Systems, 1993.
....Related work Several extended transaction models have been designed to deal with the long lived transactions found in cooperative systems. Examples of these are the open nested transaction model [16] which has been implemented in the VODAK system [7] and the ConTract model [10] of which APRICOTS [12] is a prototype implementation. Although these transaction models support longlived transactions, they are still limited in their support for truly cooperative activities. During the past decade, traditional groupware applications, such as process oriented workflow systems have been extended with ....
F. Schwenkreis. Apricots -- A prototype implementation of a ConTract system -- Management of the control flow and the communication system. In Proceedings of the 12th Symposium on Reliable Distributed Systems, Princeton (NJ). IEEE Computer Society Press, 1993.
....data, recovery, synchronization and co operation. Data is passed MANAGING HETEROGENEOUS MULTI SYSTEM TASKS 7 between steps through contexts, and forward recovery can be handled through making the inputs and outputs of steps persistent. APRICOTS is a prototype implementation of the ConTract model [34] (some of our prototype implementation ideas have been borrowed from APRICOTS) The ConTract model, however, does not allow for dynamic workflows where all possible paths of the workflow do not have to be specified beforehand. Furthermore, there is no support in the ConTract model for the flexible ....
F. Schwenkreis. APRICOTS - A prototype implementation of a ConTract system: Management of the control flow and the communications system In Proc. 12th Symposium on Reliable Distributed Systems, 1993.
....and co operation. The ConTract model is comprehensive in its description of how data is passed between steps through contexts, and how forward recovery can be handled through making the inputs and outputs of steps persistent. APRICOTS is a prototype implementation of the ConTract model [32] (some of our prototype implementation ideas have been borrowed from APRICOTS) The ConTract model, however, does not allow for dynamic workflows where all possible paths of the workflow do not have to be specified beforehand. Furthermore, there is no support in the ConTract model for the flexible ....
F. Schwenkreis. APRICOTS - A prototype implementation of a ConTract system: Management of the control flow and the communications system In Proc. 12th Symposium on Reliable Distributed Systems, 1993.
....a specialized transaction facility, enabling an application programmer to construct extended transaction from existing components. Prototype implementations of special purpose extended transaction models can be found in the literature. Some well known representatives include the APRICOTS system [Sch93] A PRototype Implementation of a COnTract System [WR93] the multi level transaction model [WH93] and the Flex transaction model used in the InterBase project [BEK93] Also related, an approach to implement extended transaction models using a commercial workflow manager has been suggested in ....
F. Schwenkreis. APRICOTS - A prototype implementation of a ConTract System. In Proceedings of the 12th Symposium on Reliable Distributed Systems, Princeton, NJ., IEEE Computer Press, 1993.
....criterion has been introduced which allows parallelism far beyond serializability. Furthermore, the design allows us to handle conflicts explicitly instead of reacting to a conflict by simply aborting the current transaction. Although the prototypical implementation of a ConTract system (APRICOTS) [Schw93] has been under development for more than three years now, not all features have been completely implemented yet. We are currently working on the efficient implementation of the concurrency control concepts. Additionally, we are looking at the problem on how existing transactional environments ....
F. Schwenkreis, APRICOTS- A Prototype Implementation of a ConTract System: Management of the Control Flow and the Communication System, Proc. of the 12th Symposium on Reliable Distributed Systems, 1993
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F. Schwenkreis. APRICOTS - A Prototype Implementation of a ConTract System - Management of Control Flow and the Communication System. In Proc. of the 12th Symposium on Reliable Distributed Systems, IEEE Computer Society Press, Princeton(NJ), 1993.
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Schwenkreis F. APRICOTS: A Prototype Implementation of a ConTract-System Managing of the Control-Flow and the Communication-System. In Proceedings of 12th Symposium on Reliable Distributed Systems, pages 12--22, 1993.
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