Summary of Transformation Rules CSC343 Fall 2006 Database Design

...More Rules... CSC343 Fall 2006 Database Design

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…and the Last One... CSC343 Fall 2006 Database Design

Exercise Translate the following E-R schema into a relational schema. For each relation indicate the key and, for each attribute, specify if null values can occur (supposing that the attributes of the E-R schema do not admit null values) CSC343 Fall 2006 Database Design

E-R schema A11 A12 A13 AR4 A31 E1 (0,1) (0,N) E3 R4 (0,N) (1,1) (0,N) CSC343 Fall 2006 Database Design