The nature and types of information in a dynamic battle eld environment ranges from georeferenced satellite images and terrain elevation to maps containing terrain features like roads, enemy unit deployment, activities and targets to spatio-temporal objects like logistic, tactical, and collection management plans. E cient processing of queries over such objects in a database requires support of...

The differing requirements for concurrency models in programming languages and databases are widely diverse and often seemingly incompatible. The rigid provision of a particular concurrency control scheme in a persistent object system limits its usefulness to a particular class of application, in contrast to the generality intended by the provision of persistence. One solution is to provide a f...

A Role-Based Access Control (RBAC) model is used to make a system secure. In addition to keeping systems secure, objects have to be consistent in the presence of multiple transactions. Traditional locking protocols and timestamp ordering schedulers are based on ‘first-comer-winner’ and ‘timestamp order’ principles to make multiple conflicting transactions serialisable, respectively. In this pap...

It is a period of online exchanges, managing daily installments through e-wallet for shopping, paying to merchant, also fulfill all the liquid cash requirement wallet money with no physical notes or currency involved transaction, exchange help web advancements. The move and gross repayment conceivable in only hardly any seconds. innovations have been utilizing still new idea dependent on past e...

Concurrency is a central pillar of the Java programming language, is implicit in the transactional model of computation adopted by most persistent systems, and has been widely studied in the context of orthogonal persistence. We argue that despite the substantial literature on concurrency control and transaction models for orthogonal persistence, a basic question as to the interaction between c...

In data broadcast environments, the limited bandwidth of the upstream communication channel from the mobile clients to the server bars the application of conventional concurrency control protocols. In this paper, we propose a new variant of the optimistic concur-rency control protocol that is suitable for the broadcast environments. In this protocol, read-only mobile transactions can be process...

Hyrise is an in-memory storage engine designed for mixed enterprise workloads that originally started as a research prototype for hybrid table layouts and with basic transaction processing capabilities. This paper presents our incremental improvements and learnings to better support transactional consistency in mixed workloads. In particular, the paper addresses a multi-version concurrency cont...