Databases
Database Analogies
Collected by Daphne Miedema — Hellerstein, J. M., & Stonebraker, M. (2005). Readings in Database Systems. 4 ed. MIT Press.
Conceptual modeling
Anything else
Evokes a visual of how clean and curated the data is
| Symbol | Concept |
|---|---|
| traditional data warehouse systems | walled gardens - ingested data is pristine, curated, and has structure. |
| MapReduce systems process | arbitrarily structured data, whether clean or dirty, curated or not. There is no loading step. This means users can store data first and consider what to do with it later. |
Highlights how clean data is important for traditional systems, but not for MapReduce systems.
traditional data warehouse systems are walled gardens: ingested data is pristine, curated, and has structure. In contrast, MapReduce systems process arbitrarily structured data, whether clean or dirty, curated or not. There is no loading step. This means users can store data first and consider what to do with it later.
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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.
