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Lawsuit Raises Fear of Greater Liability Exposure for ISVs
June 7, 2010 Alex Woodie
The importance of software quality and the potential liability for functional flaws and security vulnerabilities was on full display last month when a judge in the United Kingdom ordered a software company to compensate a former customer for the business costs of a failed implementation of a hotel management system. The judge basically overturned the limited liability clause of the vendor’s license agreement–a move that software quality experts and industry analysts say could herald a new wave of litigation and a push to certify applications.
The trouble for Kingsway Hall started soon after going live with Red Sky IT‘s
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WDSC vs. RDi
September 23, 2009 Susan Gantner
It’s no secret that I’m a big fan of RSE (Remote System Explorer). When I’m talking to developers who still use SEU to edit their source code, I always nag them to give RSE a try. Assuming I manage to convince them to take a look at it, usually the next topic of discussion relates to whether that means they should load the RSE that’s in WDSC or the version that’s in RDi.
First, some background for any of you out there who may not be aware of what the quandary is about. RSE first appeared as one part WDSC
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Subqueries vs. Joins
July 8, 2009 Hey, Ted
Please settle a disagreement. Another developer claims that it is bad to use an SQL subquery if the same results can be achieved with a join. He says that database management systems can optimize joins better than they can optimize subqueries, which means that joins run faster than subqueries. Is this true? I seem to have heard somewhere that the query engine converts a subquery to a join when possible.
–Dee
If the other developer is experienced with database management systems other than DB2, than he may be correct. However, when it comes to DB2 for i, you are correct.
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Power vs. Nehalem: Scalability Is So 1995, Cash is So 2009
April 6, 2009 Timothy Prickett Morgan
The entry and midrange server racket has a new processor in town, and its name is Nehalem, and it comes from Intel. And despite the poor global economy and despite the nay-sayers who think that people don’t think about processors and their features any more, the Nehalem chip is going to get traction this year and it is most certainly going to shake up the entry and midrange spaces where the Power Systems i platform plays.
Let’s play some Intel code-name bingo first, just because it is fun. Technically, the chip that Intel announced last week has Nehalem as
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ON vs. ON
November 28, 2007 Hey, Professional
In ON vs. WHERE, I demonstrated that an outer join yields different results depending on whether you place a selection expression in the ON clause or the WHERE clause for a secondary file. Now I want to follow up on that tip by looking at the difference between the ON and WHERE clauses for a primary table.
Here’s the invoicing data I used in the previous tip. We have header information:
SELECT H.* FROM INVHDR AS H Invoice Company Customer Date 47566 1 44 2004-05-03 47567 2 5 2004-05-03 47568 1 10001 2004-05-03 47569 7 777 2004-05-03 47570 7
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ON vs. WHERE
November 14, 2007 Hey, Ted
I need your help with an SQL query. I have two database files: a header file and a detail file. There may be many detail records for each header record, but I only want to see certain detail records. Here’s the rub. I want to retrieve all header records, even the headers for which I don’t select any corresponding detail. It seems to me this should be an easy query to write, but my efforts so far produce only the header records for the selected details.
–Wayne
There’s more to this query than meets the eye, Wayne. It is simple,
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Admin Alert: More Info on SAVSYSINF, Green-Screen Printing, Performance PTFs, and Batteries
July 11, 2007 Joe Hertvik
When writing a weekly column like Admin Alert, mistakes can inadvertently sneak into the final copy. Fortunately, I have alert readers (pun intended) who correct me on any errors that I may have made, providing me with additional information on many topics in the process. So in the spirit of setting the record straight, here are some reader-provided corrections and additions to material that I published in earlier columns.
Corrections of FSB Meditations
In my recent column on Full System Backups, I wrote that IBM’s Save System Information command (SAVSYSINF) allows you “…to save the cumulative changes that have
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ISVs React (Or Not) to PHP on the System i
April 24, 2006 Mary Lou Roberts
The news that PHP will be available on the System i–and for free!–seems to have captured the imagination and interest of many. After all, it’s a Java alternative, and we all know how unenthusiastic many iSeries users have been about going down the Java road. The potential is there, many say, for PHP to have a big–even huge–impact on the System i5 line. But there are some issues that need to be dealt with first.
For one thing, there are lots and lots of young and enthusiastic PHP programmers who are devoted to this easy-to-learn and easy-to-use Web scripting language.
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ISVs React (Or Not) to PHP on the System i
April 24, 2006 Mary Lou Roberts
The news that PHP will be available on the System i–and for free!–seems to have captured the imagination and interest of many. After all, it’s a Java alternative, and we all know how unenthusiastic many iSeries users have been about going down the Java road. The potential is there, many say, for PHP to have a big–even huge–impact on the System i5 line. But there are some issues that need to be dealt with first.
For one thing, there are lots and lots of young and enthusiastic PHP programmers who are devoted to this easy-to-learn and easy-to-use Web scripting language.
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ISVs React (Or Not) to PHP on the System i
April 24, 2006 Mary Lou Roberts
The news that PHP will be available on the System i–and for free!–seems to have captured the imagination and interest of many. After all, it’s a Java alternative, and we all know how unenthusiastic many iSeries users have been about going down the Java road. The potential is there, many say, for PHP to have a big–even huge–impact on the System i5 line. But there are some issues that need to be dealt with first.
For one thing, there are lots and lots of young and enthusiastic PHP programmers who are devoted to this easy-to-learn and easy-to-use Web scripting language.