Abstract. We develop a general setting for the treatment of extensions of categories by means of freely adjoined morphisms. To this end, we study what we call composition graphs, i...
Abstract. This paper discusses schema evolution in software engineering databases. After a study of existing approaches, we show that these approaches do not satisfy software engin...
Abstract--Nowadays, novel applications, such as personalized e-commerce services, call for cooperation across enterprise boundaries. Service-Oriented-Architecture (SOA) forms a sol...
Traditionally, the composition of Web services to create mashups has been achieved by using an application server as a mediator between a client browser and services. To avoid thi...
Abstract. We demonstrate two classes of attacks on EC-RAC, a growing set of RFID protocols. Our first class of attacks concerns the compositional approach used to construct a parti...