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Struts Kick Start by Kevin Bedell, James Turner

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Data Sources and Storage

The next question that you, as a developer, need to consider is where the data from the application is coming from and where it will be stored. This application is particularly complex because there will be data coming from outside sources (stock quotes), data entered by the user (transactions and account information), and data entered by the staff (news stories).

Because historical as well as current stock information will be needed (eventually, for example, it would be good to be able to display charts of stock prices over time), the stock quotes will be stored in the database and updated hourly. In the finished application, a separate program would run, getting the quotes and writing them into the database. For this ...

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