simpli Posted March 9, 2010 Share Posted March 9, 2010 Hi, I have a design issue which i am struggling with. I have the following table with the following data: used_currencies Forex year Month Rate USD 2010 1 0.98 USD 2010 2 0.96 CAD 2010 1 1.01 When a user edits a form client side and saves it, he deleted, added or modified some record. The new data I have is now: Forex year Month Rate USD 2010 1 0.98 USD 2010 2 0.99 USD 2010 3 1 USD 2010 4 1.01 CAD 2010 1 1.01 AUD 2010 1 1.10 What i am currently doing is deleting the old data and adding the new stufff. That worked until now because I had not added my referential integrity. I do not want the users to add amounts in a currency format that doesn't exist in the used_currencies table therefore i need referential integrity. Can anyone recommend a better way to do this? Ideally i would have one forex row for which I would specify the rate for each month in a column but I do not know in advance the number of columns i may or may not have so I have to do it like this. Thanks for any feedback, JR Quote Link to comment Share on other sites More sharing options...
gizmola Posted March 9, 2010 Share Posted March 9, 2010 I would suggest that you re-read what you wrote, and see if you can better formulate a question. Referential integrity is a good thing ... it will block improper inserts or updates. That is not a problem with any approach, although if you were doing a single insert previously, you might want to break it up into a series of individual inserts. There's not much else I can say --- you have only sketched out a database design, with no code, and no idea what your issue is. Quote Link to comment Share on other sites More sharing options...
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