In this paper we discuss extensions to the conventional relatronal algebra to support transaction time We show that these extensions are applicable to hrstorlcal algebras that sup...
This paper describes an approach to support non-visual exploration of graphically represented information. We used a hierarchical structure to organize the information encoded in ...
Exploiting the complex structure of relational data enables to build better models by taking into account the additional information provided by the links between objects. We exten...
Model Driven Performance Engineering (MDPE) enables early performance feedback in a MDE process, in order to avoid late identification of performance problems which could cause si...
Mathias Fritzsche, Wasif Gilani, Ivor T. A. Spence...
Supporting SPARQL queries over relational databases becomes an active topic recently. However, it has not received enough consideration when SPARQL queries include restrictions on...