In real-world machine learning scenarios, datasets are often not provided in a single, simple CSV file. Instead, they may be stored in a relational database, where information is distributed across multiple tables. For example, an e-commerce application might store customer addresses in one table and their purchase data in another, requiring practitioners to extract and merge these separate files before modeling.

Relational Database

- The Hierarchy: A Top-Down Approach
- The Database: A bottom-up approach

University of Michigan - Ann Arbor

- Organization schemes and structure: how people categorize and structure information
- Labeling systems: How people represent information
- Navigation Systems: The sequence and process that users browse or move through information
- Search systems: the way users search for information

The Main Components of IA

Rosenfeld, L., Morville, P., Arango, J., &amp; Morville, P. (2015). Information Architecture for the world wide web. O'Reilly. 

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