NoSQL databases rise as a solution to manage large amounts of data in the cloud. Mechanisms to guarantee Quality of Service in can significantly benefit from performance predictability. Building an accurate predictive model to estimate a DBMS performance in a cloud environment is challenging since i) workload and resources allocation change dynamically; ii) concurrency and distribution introduc...

Scalability in Model-Driven Engineering (MDE) is often a bottleneck for industrial applications. Industrial scale models need to be persisted in a way that allows for their seamless and efficient manipulation, often by multiple stakeholders simultaneously. This paper compares the conventional and commonly used persistence mechanisms in MDE with novel approaches such as the use of graph-based No...

NoSQL-Datenbanken sind gerade in der Webentwicklung zunehmend beliebt. Oft sind es die großen Datenmengen, die es zu verwalten gilt, mitunter sind diese Systeme aber auch wegen ihrer Schema-Flexibilität für agile Entwicklungsteams interessant. Indem viele NoSQL-Datenbanken keine Unterstützung für die Definition, Einhaltung und Wartung eines globalen Schemas bieten, verlagern sich klassische Auf...

In der jüngsten Vergangenheit hat es im Datenbankmarkt einen Paradigmenwechsel gegeben. Haben über viele Jahre relationale Datenbanken den Markt klar beherrscht und jede Art von Daten abgespeichert (" One Size Fits All "), so sind unter dem Begriff NoSQL (Not only SQL) eine ganze Reihe von neuartigen Systemen entstanden. Eine besondere Kategorie von NoSQL-Datenbanken sind Graphdatenbanken. Eine...

Processing large volumes of Linked Data requires sophisticated methods and tools. In the recent years we have mainly focused on systems based on relational databases and bespoke systems for Linked Data processing. Cloud computing offerings such as SimpleDB or BigQuery, and cloud-enabled NoSQL systems including Cassandra or CouchDB as well as frameworks such as Hadoop offer appealing alternative...

This work proposes to look into the construct of SQL (structured Query Language) and NoSQL (Not only SQL) systems. This will help proffer a framework that guarantees interoperability across board for SQL and NoSQL platforms. This research is being carried out to find a lasting solution to the problem of data management and analysis. Various mathematical/statistical laws will be looked into to h...