Chapter 01 - Key points
Completion requirements
Key points seen in Chapter 01.
1. Types of data organizations
- After defining the conceptual organization of the data, a physical organization must be chosen.
- This organization defines how the data will be structured and saved on disk.
- This organization is transparent to the user.
- We can define three organizations:
- Structured Data (or databases),
- Unstructured Data (or free-form files, text files),
- Semi-Structured Data (which will be the subject of this module).
- Each organization meets specific needs; the right organization must be chosen for each use case.