Slide 25
Slide 25 text
- Imagine A references B and C. We say that that makes A “dependent” on B and C.
- We represent with this data with these records:
- AE, BE, CE, A0, B0, C0, A0-B0, A0-C0.
- When B is updated, A must be too. The new records will look like:
- AE, BE, CE, A1, B1, C0, A1-B1, A1-C0.
Persistence layer mapping
A
C
B