2. Information Levels and Frameworks

2.1Four Information Levels

  • Conceptual

  • Logical

  • Physical

  • External

2.2The Conceptual Level

  • Asserted fact types

  • Constraints

  • Derivation rules

  • Transactions

2.3Database Design Example

  • From external to conceptual

  • From conceptual to relational

2.4Development Frameworks

  • Information systems life cycle

  • Specific frameworks

2.5Summary

Get Information Modeling and Relational Databases, 2nd Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial