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Download full textMcMaster, Kirby; Sambasivam, Samuel; Hadfield, Steven; Wolthuis, Stuart – Information Systems Education Journal, 2013
In this paper, we describe how database instructors can teach Relational Algebra and Structured Query Language together through programming. Students write query programs consisting of sequences of Relational Algebra operations vs. Structured Query Language SELECT statements. The query programs can then be run interactively, allowing students to…
Descriptors: Algebra, Programming, Teaching Methods, Database Design
Mapping among Knowledge Bases and Data Repositories: Precise Definition of Its Syntax and Semantics.
Peer reviewedBlanco, Jose Miguel; Goni, Alfredo; Illarramendi, Arantza – Information Systems, 1999
Discussion of data repositories available in global information systems focuses on facilitating access by providing semantic views. Highlights include the mapping relation; syntax and semantics of the mapping; query formulation and processing; terminological systems for semantic views; and relational algebraic expressions. (LRW)
Descriptors: Algebra, Databases, Global Approach, Information Systems
