JPA-to-many, many-to-mapping

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To avoid forget to write down these dots.

Case-to-many mapping entity when

@OneToMany(cascade = { CascadeType.MERGE, CascadeType.PERSIST }, fetch = FetchType.LAZY, mappedBy = "depart")
private Set<Employee> emps;

// generate getter / setter methods

// note that the above mappedBy corresponds to the number of entities you mean, you can see in the following

Case of many-to-time mapping entity