Titlebook: Hibernate Recipes; A Problem-Solution A Joseph Ottinger,Srinivas Guruzu,Gary Mak Book 2015Latest edition Gary Mak and Srinivas Guruzu and J

GLIB

补助

Component Mapping,Hibernate makes it easy to employ a fine-grained domain model so you can have more classes than tables. In other words, you can map a single record in a table to more than one class by having one . class type; the others should be . class types.

额外的事

Many-to-One and One-to-One Mapping,In general, entities are related or associated to each other. For example, a . entity is associated with an . entity. A . entity can have one or more than one . entity (for example, . and .). These relationships or associations are represented differently in a relational model and the domain/object model.

PTCA635

Many-Valued Associations,A many-valued association is by definition a collection of references to entities. The collection can be of type ., ., ., and so on in Java.