- Hands-On Penetration Testing with Python
- Furqan Khan
- 68字
- 2021-07-02 14:13:59
Aggregation
The aggregation relationship is a special kind of has a relationship that is always one way. It's also known as a one-way association relationship. For example, the relationship between Employee and Address is a one-way association, because an employee will always have an address, but the reverse of this won't always be the case. The following example depicts the aggregation relationship between Employee and Address:
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