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Database Modeling and Design

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4.3 Conceptual Data <strong>Modeling</strong> 63<br />

Employee<br />

1<br />

1<br />

1<br />

N<br />

+<br />

ismarried-to<br />

manages<br />

d<br />

Manager<br />

Secretary Engineer Technician<br />

1 1<br />

1<br />

N<br />

hasallocated<br />

is-allocated is-allocated belongs-to<br />

1<br />

1<br />

1<br />

N<br />

Desktop Workstation Prof-assoc<br />

(b) Employee view<br />

Skill<br />

N<br />

Project<br />

N<br />

1<br />

skill-used<br />

assigned-to<br />

N<br />

N<br />

Employee<br />

N<br />

Location<br />

(c) Employee assignment view<br />

Figure 4.3<br />

(continued)

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