In this article, we present an integrated instructive methodological approach. We begin with a set of proposals for educational innovation oriented towards active learning that have been tested separately and implemented for various subjects in courses of different levels. The approach integrates the following elements: (1) the dynamic generation of digital content by students and their integration into shared knowledge bases of the subjects involved; (2) the systematic use of quality content, mainly in video format, distributed through online platforms as support for flipped classrooms; (3) peer evaluation to support the development of reflective and selfcritical capacities; and (4) systematic collaboration with students and professors from other universities to develop the enumerated activities. The methodology has been tested in a variety of subjects, thanks to its flexibility. In all experienced cases, it has been shown that it is feasible for students to generate enough valuable and reusable content. In addition, students have expressed high levels of satisfaction with the implementation of the proposal.

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Due to the emerging interest in integrating different application environments, there have been many recent proposals for federated systems. In this paper, a federated system that permits the integration of heterogeneous relational databases using a terminological knowledge representation system is presented. In particular, two of the system's components: the translator and the integrator are explained in depth. The translator permits one to obtain a terminology from a relational schema, either semiautomatically, by expressing database properties, or manually, by using a set of predefined operations. In turn, the integrator generates a federated terminology by integrating several terminologies using the semantics expressed as correspondences between the data elements of different terminologies. Unlike many other approaches, the use of a terminological system permits us to obtain a semantically richer federated terminology and, at the same time, define a wider and more consistent integration process.

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