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Deconstructing Certification

(Micah Dubinko) XML and the labyrinth of related technologies have gotten complicated enough that a resume-writer can no longer sum up her XML experience with short bullet points. Or can she? Members of the XML community come from diverse backgrounds and educational experiences. If you had to di

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Starting with Oracle ADF

(Steve Muench) In my last column, I described how Oracle JDeveloper 10g and the Oracle Application Development Framework (ADF) give developers familiar with Oracle Forms a familiar rapid application development (RAD) environment and a powerful set of business components for quickly building J2EE app

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Architecture (Sample Chapter)

(Rick Greenwald, Robert Stackowiak and Donald Bales) If you understand the architecture of Oracle Application Server, you will have an excellent framework for understanding how the product works. Learning how the various components of Oracle Application Server interact can help you avoid many p

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Top N rows for each X

(Rudy Limeback) I want a query for retrieving the top two recently inserted records for each id. My table has columns id, adate, and description. There are five records with id 2 and four records with id 3. I want to retrieve top two records for both id 2 and 3. I should get total four records,