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Auflistung nach Schlagwort "database systems"

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  • Konferenzbeitrag
    Developing OERs for Teaching Database Systems
    (BTW 2023, 2023) Rakow, Thomas C.; Kless, André; Hasler, Charlotte; Knolle, Harm; Faeskorn-Woyke, Heide; Saatz, Inga Marina; Lambert, Jens; Focken, Mareike
    In the project EILD.nrw, Open Educational Resources (OER) have been developed for teaching databases. Lecturers can use the tools and courses in a variety of learning scenarios. Students of computer science and application subjects can learn the complete life cycle of databases. For this purpose, quizzes, interactive tools, instructional videos, and courses for learning management systems are developed and published under a Creative Commons license. We give an overview of the developed OERs according to subject, description, teaching form, and format. Following, we describe how licencing, sustainability, accessibility, contextualization, content description, and technical adaptability are implemented. The feedback of students in ongoing classes are evaluated.
  • Textdokument
    RelaX: A Webbased Execution and Learning Tool for Relational Algebra
    (BTW 2019, 2019) Kessler, Johannes; Tschuggnall, Michael; Specht, Günther
    The relational model and especially the relational algebra is the fundament of each relational database system and thus content of almost every database lecture. Even though there exist a few tools allowing to experiment with relational algebra, a common way to learn it is still by formulating queries on paper, without the option of checking them for syntax or even executing them. To fill this gap and to support students in their learning process, we propose RelaX, a webbased tool which is capable of executing arbitrary relational algebra statements on arbitrary datasets. By drawing interactive operator trees corresponding to the queries, it is also possible to compute the final result in a step-by-step manner. Finally, RelaX is also equipped to execute SQL queries and to automatically translate them to relational algebra.