How to create unique constraints using hibernate for an existing table -


i have existing table in database , want update table adding unique constraints it.

i have updated model class appropriate annotations related unique constraints. now, if call localsessionfactorybean.updatedatabaseschema() method, unique constraints not created, when first drop table , call localsessionfactorybean.updatedatabaseschema() method creates unique constraints in table.

how can create unique constraints existing table using hibernate without dropping table?

also let me know whether feasible in hibernate or not?


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