Databases
Database Analogies
Collected by Raja Sooriamurthi — Kroenke, D., & Auer, D. (2016). Database Processing Fundamentals, Design, and Implementation. 14 ed. Pearson.
Conceptual modeling
Anything else
focus on structure
| Symbol | Concept |
|---|---|
abstraction
A data model is a plan, or blueprint, for a database design. By analogy, consider the construction of your dorm or apartment building. The contractor did not just buy some lumber, call for the concrete trucks, and start work. Instead, an architect constructed plans and blueprints for that building long before construction began. If, during the planning stage, it was determined that a room was too small or too large, the blueprint could be changed simply by redrawing the lines. If, however, the need for change occurs after the building is constructed, the walls, electrical system, plumbing, and so on will need to be rebuilt, at great expense and loss of time. It is easier, simpler, and faster to change the plan than it is to change a constructed building.
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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.
