Preview oracle DML before commit

What's the best tool to give to a data entry clerk to allow them to preview the effect their DML statement may have before committing the transaction? In the past they've used MS access but we want to veer away from this.
Thank you.

Hi,
Sanj wrote:
What's the best tool to give to a data entry clerk to allow them to preview the effect their DML statement may have before committing the transaction? In the past they've used MS access but we want to veer away from this.I guess any tool that doesn't have autocommit on by default (better even : a tool with autorollback on exit !)
This way they can do their DML and check the effect in order to decide weither to commit or not.

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Preview oracle DML before commit

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