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primary key in hibernate

Posted on 2008-10-09
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Last Modified: 2013-11-24
how to distinguish primary with other keys in hibernate in java bean class? is id is important? or id stand for primary key?

The id property holds a unique identifier value for a particular event what it means?
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Question by:priyapratheep
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by:darkapple
ID: 22684978
id refers primary key in java bean classes. id is of utmost important because id is the main property which distinguishes one persistent object from another persistent object. id is the representative of a object in a class.

hope this gives you some idea.
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themuppeteer earned 500 total points
ID: 22686755
when you have a database with multiple rows, you need something to make each row unique. That is the primary key (can be one field or multiple together)
When you want to persist your object (=store it in the database) id is what makes your object unique in the
...and in case you use JPA you add @id above the variable or the getter function to show which field you want to use for this.

hope this helps


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