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Relational Data Models and Database Constraints

Explore the concepts of relational data models, database constraints, and schema diagrams through various examples and illustrations.

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Relational Data Models and Database Constraints

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  1. Chapter 5 The Relational Data Model and Relational Database Constraints

  2. FIGURE 5.1The attributes and tuples of a relation STUDENT.

  3. FIGURE 5.2The relation STUDENT from Figure 5.1 with a different order of tuples.

  4. FIGURE 5.3Two identical tuples when the order of attributes and values is not part of relation definition.

  5. FIGURE 5.4The CAR relation, with two candidate keys: LicenseNumber and EngineSerialNumber.

  6. FIGURE 5.5Schema diagram for the COMPANY relational database schema.

  7. FIGURE 5.6One possible database state for the COMPANY database schema.

  8. FIGURE 5.7Referential integrity contstraints displayed on the COMPANY relational database schema.

  9. FIGURE 5.8The AIRLINE relational database schema.

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