Have 2 separate tables or an additional field in 1 table?

Posted by hkansal on Stack Overflow See other posts from Stack Overflow or by hkansal
Published on 2010-05-15T09:38:34Z Indexed on 2010/05/15 9:44 UTC
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sql

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database

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design

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normalization

Hello,

I am making a small personal application regarding my trade of shares of various companies.

The actions can be selling shares of a company or buying. Therefore, the details to be saved in both cases would be:

Number of Shares
Average Price

Would it be better to use a separate tables for "buy" and "sell" or just use one table for "trade" and keep a field that demarcates "buy" from "sell"?

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