This paper introduces the Mobile Nested Transactions (MNT) model for transaction processing coordination in groups of mobile devices. The model extends traditional approaches—centralized and distributed—for distributed transaction processing over mobile devices. Under the Nested Transactions approach, sub-transactions—logical work units—processing control is highly flexible and fault-tolerant. ...

The importance of reporting is ever increasing in today’s fast-paced market environments and the availability of up-to-date information for reporting has become indispensable. Current reporting systems are separated from the online transaction processing systems (OLTP) with periodic updates pushed in. A pre-defined and aggregated subset of the OLTP data, however, does not provide the flexibilit...

It is possible to produce different database designs based on the same set of requirements to a database. In this paper, we present a decision support method for comparing different database designs and for selecting one of them as the best design. Each data model is an abstract language that can be used to create many different databases. The proposed method is flexible in the sense that it ca...

Transaction processing applications traditionally run on the high-end servers. Up until recently, such servers had uniform core-to-core communication latencies. Now with multisocket multicores, for the first time we have Islands, i.e., groups of cores that communicate very fast with cores that belong to the same group and several times slower with cores from other groups. In current mainstream ...

D ecision support systems are the core of business IT infrastructures because they give companies a way to translate a wealth of business information into tangible and lucrative results. Collecting, maintaining, and analyzing large amounts of data, however, are mammoth tasks that involve significant technical challenges, expenses, and organizational commitment. Online transaction processing sys...

Traditional ACID transactions, typically supported by relational database management systems, emphasize database consistency. BASE provides a model that trades some consistency for availability, and is typically favored by cloud systems and NoSQL data stores. With the increasing popularity of blockchain technology, another alternative to both ACID and BASE is introduced: SALT. In this keynote p...

Won Kim UniSQL, Inc. 9390 Research Blvd. Austin, TX 78759 In this paper, we investigate the reliability aspects of transaction processing in multidatabase systems from a formal point of view. We define a new correctness notion called global commitment (GC) for reliable transaction processing in a multidatabase environment in which local DBMSs may not support the prepared state of the two phase ...

Workloads in distributed database applications consist of queries and transactions. In order to address performance requirements, distributed transaction processing systems have to deal with two related issues: transaction routing and scheduling. Due to the distribution of data objects among nodes and the access cost incurred by remote accesses, efficient transaction routing is an important con...

Service-oriented computing is emerging as a distributed computing model where autonomous services interact with each other using standard Internet technology. In addition to the application-specific functions that services provide (different) services may also support (different) sets of protocols and formats addressing extra-functional concerns such as transaction processing and reliable messa...

Data management technology changes the world we live in by providing efficient access to huge volumes of constantly changing data and by enabling sophisticated analysis of those data. Recently there has been an unprecedented increase in the demand for data management services. In parallel, we have witnessed a tremendous shift in the underlying hardware technology toward highly parallel multicor...