Databases
Visual Representation
Collected by Daphne Miedema — Garcia-Molina, H., Ullman, J., & Widom, J. (2009). Database Systems: The Complete Book. 2 ed. Prentice Hall Press, Upper Saddle River, NJ, USA.
Query languages (basic)
Within-Database
Visualizes how the JOIN looks at intersections in data
| Symbol | Concept |
|---|---|
| boxes | relations / tuples |
| vertical lines | attributes |
The construction of joined tuples (in terms of attributes)
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A notional machine is a pedagogic device to assist the understanding of some aspect of programs or programming. To something along the lines of A notional machine is a pedagogical tool designed to support the understanding of programs, programming, and other aspects of computing such as databases.
