Enterprises across all industries increasingly depend on decision guidance systems (DGSs) to facilitate decisionmaking across all lines of business. Despite significant technological advances, current DGS development paradigms lead to a tight-integration of the analytics models, methods and underlying tools that comprise these systems, often inhibiting extensibility, reusability and interoperab...

NoSQL systems are more and more deployed as back-end infrastructure for large-scale distributed online platforms like Google, Amazon or Facebook. Their applicability results from the fact that most services of online platforms access the stored data objects via their primary key. However, NoSQL systems do not efficiently support services referring more than one data object, e.g. the term-based ...

Due to the unstructured nature of modern digital data, NoSQL storages have been adopted by some enterprises as the preferred storage facility. NoSQL storages can store schema-oriented, semi-structured, schema-less data. A type of NoSQL storage is the document-append storage (e.g., CouchDB and Mongo) which has received high adoption due to its flexibility to store JSON-based data and files as at...

AsterixDB is a new, full-function BDMS (Big Data Management System) with a feature set that distinguishes it from other platforms in today’s open source Big Data ecosystem. Its features make it well-suited to applications like web data warehousing, social data storage and analysis, and other use cases related to Big Data. AsterixDB has a flexible NoSQL style data model; a query language that su...

Big data real-time processing aims for faster retrieval of data and analysis. Lately, in order to accelerate real-time processing, big data platforms are trying to exploit NAND flash based storage devices, especially SSDs. NoSQL DBMSs have been used for real-time management of big data which significantly depends on index structures to efficiently manage data. Previous research about flash-awar...

Over the last few years we witness an explosion on the development of data management solutions for big data applications. To this direction NoSQL databases provide new opportunities by enabling elastic scaling, fault tolerance, high availability and schema flexibility. Despite these benefits, their limitations in the flexibility of query mechanisms impose a real barrier for any application tha...

As more businesses realized that data, in all forms and sizes, is critical to making the best possible decisions, we see the continued growth of systems that support massive volume of non-relational or unstructured forms of data. Nothing shows the picture more starkly than the Gartner Magic quadrant for operational database management systems, which assumes that, by 2017, all leading operationa...