We describe a novel hybrid consistency framework that maintains consistency among Distributed Annotation Records kept at various web-based annotation tools. There are issues in semantics of annotation tools. Each annotation tool stores different metadata, has different rules for tags, and does not provide timing information for the updated records. As a result of these, documents can be updated...

SQL extensions that allow queries to explicitly specify data quality requirements in terms of currency and consistency were proposed in an earlier paper. This paper develops a data quality-aware, finer grained cache model and studies cache design in terms of four fundamental properties: presence, consistency, completeness and currency. The model provides an abstract view of the cache to the que...

Transactional patterns are used to specify flexible and reliable composite Web services. A transactional pattern is a convergence concept between workflow patterns and advanced transactional models. These are of coordination patterns and as a structured transaction. This project proposes an event-driven approach to validate the transactional behavior of service compositions. The transactional b...

Replication is the key to providing high availability, fault tolerance, and enhanced performance in a cluster of workstations (COWs). However, building such a system remains as a dicult and challenging task, mainly due to the diculty of maintaining data consistency among replicas and the lack of easy and ecient tools supporting the development procedure. In this paper we propose an active re...

There are many different aspects of consistency with regard to cross-platform user interfaces and their design. One of the important factors in using a cross-platform user interface is its navigation capability across platforms. In many instances, it is impossible to provide navigation consistency due to the inherently different nature of the user interfaces (UIs) on different platforms. In thi...

Reliability, availability and scalability are major concerns in the design of distributed file systems. We have built an island-based file system (IFS) called Archipelago to solve these problems by failure isolation and low-cost consistency maintenance. The building blocks of IFS are smaller self-contained file servers called islands. The main idea underlying island-based design is the one-isla...

In this research we develop a mathematical construct for estimating uncertainties within the bilevel optimization framework of collaborative optimization. The collaborative optimization strategy employs decomposition techniques that decouple analysis tools in order to facilitate disciplinary autonomy and parallel execution. To ensure consistency of the physical artifact being designed, interdis...

Article history: Received 4 April 2013 Available online 27 November 2013 JEL classification: C70 D82

NoSQL databases are rapidly becoming the storage of choice for large-scale Web applications. However, for the sake of scalability these applications trade consistency for availability. In this paper, we regain control over this tradeoff by adapting an existing approach, version control (VC), to application state. By using VC, the data model is defined by the application and not by the database....