A knowledge-based tutoring system for SQL programming

This paper presents the design of a knowledge-based tutoring system (KBTS) for teaching students to write SQL programs. After analyzing the underlying control mechanism in a tutoring process, we propose a novel architecture to support the process. Our system has many features such as the use of a uniform control flow strategy, the employment of a graph-based scheme to represent global knowledge, and the allowing of multiple teaching sequences and multiple viewpoints for a teaching goal. We argue that these features are essential for not only SQL tutoring systems, but also KBTSs in other domains. Thus, the paper establishes a generic framework for developing the various KBTSs. We also report some implementation considerations for the proposed system