authentication - For Grails Spring Security Core, what is the purpose of the VERSION fields in the USER, GROUP and ROLES tables? -

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i using grails spring security core plugin 2.0-rc4, , noticed version field created in each of user, groups , roles tables. database expert asking me version field , not find explanation of field. can tell me version field used for, , how used?

the version property on gorm managed classes used optimistic locking. can read more in documentation.


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