Modelintro
Relational data model
Also called relational model, relations.
Data as relations (sets of tuples) with keys and integrity constraints.
Data as relations (sets of tuples) with keys and integrity constraints.
About this page
The build computes these levels from the evidence in the repository. Each row says what the next level needs. Read what the levels mean.
| Ladder | Level | What the next level needs |
|---|---|---|
| Human proof | H0 no proof |
|
| Lean | L0 no Lean part |
|
| Visual | V0 none |
|
| Writing | W0 stub |
|
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