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Under Wraps

(Brian Connolly) Most large businesses have an untapped asset: their warehouses of data about individual customer purchases. Market research firms, for example, will pay for this information because they forecast future buying trends based on demographic analysis of past activity. But while this

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The Buzz around Stinger

(Paul C. Zikopouos) If you’ve read an IT magazine, attended a conference, or are an IBM DB2 Universal Database(DB2 UDB) user, you’ve heard the buzz about “Stinger”, the preview of the next release of DB2 UDB for Linux, UNIX, and Windows “Stinger” introduces over 175 valuable features -more than some

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Cycling with CTEs

(Itzik Ben-Gan) Common table expressions (CTEs), a new T-SQL feature in SQL Server 2005 (formerly code-named Yukon), give you expressive powers for writing T-SQL queries to manipulate hierarchies easily and efficiently. Some major advantages of CTEs are that they’re ANSI SQL-99 compliant, they l

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SQL/400 Data Definition Language

This part of the book covers Structured Query Language (SQL), specifically DB2 for OS/400 SQL (or SQL/400, for short).1 SQL is an industry-standard language for defining and manipulating data contained in a relational database. This chapter introduces SQL/400 and covers the Data Definition Language

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SimpleXML

(James Murray) Learn an easy way to parse XML and putput it the way you want by using the simpleXML extensions in PHP5. Murray outlines the 3 main elements of an XML document and how to replace them with your own non-template data and how to build an array of all the tags put in the document.