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Big Data describes a recent trend in information processing whereby a huge amount of differently structured data is processed at a very high velocity. The given requirements this kind of information processing demands, tend to exceed the capacity and performance of relational databases at a more frequent rate, which had successfully been used in da...
Motivated by requirements of Web 2.0 applications, a plethora of non-relational databases raised in recent years. Since it is very difficult to choose a suitable database for a specific use case, this paper evaluates the underlying techniques of NoSQL databases considering their applicability for certain requirements. These systems are compared by...
Due to the large amount of data generated by user interactions on the Web, some companies are currently innovating in the domain of data management by designing their own systems. Many of them are referred to as NoSQL databases, standing for ’Not only SQL’. With their wide adoption will emerge new needs and data integration will certainly be one of...
Virtual collaboration is an important aspect for the success of scientific projects, especially if participating researchers are distributed over the whole globe. In the recent past some systems - so called virtual research environments - were presented to support collaborative work restricted to certain research domains. Within this article a conc...
The integration of data stemming from heterogeneous sources is an issue that challenges computer science research since years – not to say decades. Therefore, many methods, frameworks and tools were and are still being developed that all promise to solve the integration of data. This work describes those which we think are most promising by relatin...