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20 lines
625 B
Markdown
20 lines
625 B
Markdown
---
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title: "conceptual-vs-ipmlementation-models"
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tags:
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- info201
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---
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Models like ERDs are used to represent a high level conceptual overview of a system, or to as a lower level specification that can drive the implementation of the database.
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**Conceptual
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- Abstract/big-picture
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- Useful in inital design stages and for communication
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**Implementation
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- Concrete/detailed
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- Useful in documenting and specifying structure (for devs etc)
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- Should be detailed and specific enough to allow a dev to implement it without having to guess at details
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- Should be tailored to the specific implementation technologies or systems
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