Databases
Visual Representation
Collected by Xiaoying Tu — Date, C. J. (2003). An Introduction to Database Systems. 8 ed. Pearson.
Design theory and normalization
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Highlights the fact that higher normal forms must also be in lower normal forms: e.g. if a relation is in 2NF, it must also be in 1NF.
| Symbol | Concept |
|---|---|
| Rectangles | normal forms |
The relationships among different normal forms
Normal_forms_as_a_Venn_diagram [Main] Relationships_among_Normal_Forms_as_a_diagram
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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.
