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EclipseLink/UserGuide/JPA/Basic JPA Development/Configuration/JPA/Defaults

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Defaults

Each annotation has a default value (consult the JPA specification for defaults). A persistence engine defines defaults that apply to the majority of applications. You only need to supply values when you want to override the default value. Therefore, having to supply a configuration value is not a requirement, but the exception to the rule. This is known as configuration by exception.

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Note: You should be familiar with the defaults to be able to change the behavior when necessary.

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Version: 2.2.0 DRAFT
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