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Transient (temporary)
There are not mapped to a particular record database objects
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Persistent (lasting)
There have been object mapping relationship with a database record
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Of type Detached (Independent)
Disconnecting the connection object database
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Removed The (deleted)
Corresponding to the object record has been deleted, the object should not be used
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Dirty data
Because Transient and Detached from Session control, i.e. from the Session object after modification is dirty.
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