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  • Oracle on iPad

    - by Aaron Lazenby
    This came across the Twitter-sphere from Steve Wilson (aka @virtualsteve), Oracle Vice President, Systems management:"One of the engineers on the Ops Center team just sent me a pic of OC running on an iPad. Neat!"And here's proof:

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  • Add logo background color to data returned by StackAuth sites route

    - by Yi Jiang
    Given that now with Stack Exchange 2.0 the logo of some of the sites, like Web Apps, AskUbuntu, Photography, Gaming and Pro Webmasters have non-white background, I think it will be best if the StackAuth sites route can include the preferred background color for those the logo of these sites. This is especially important for sites like Photography whose logo is unreadable if the traditional white is used. Edit: Here's an example of what I mean here: As you can see, the AskUbuntu logo text totally invisible against a white background.

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  • What is the usage of Splay Trees in the real world?

    - by Meena
    I decided to learn about balanced search trees, so I picked 2-3-4 and splay trees. What are the examples of splay trees usage in the real world? In this Cornell: http://www.cs.cornell.edu/courses/cs3110/2009fa/recitations/rec-splay.html I read that splay trees are 'A good example is a network router'. But from rest of the explanation seams like network routers use hash tables and not splay trees since the lookup time is constant instead of O(log n).

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  • "chown mysql:mysql /data/tmp" command

    - by Mellon
    I am on a Linux ubuntu machine with MySQL installed. If there is a MySQL installation on a Ubuntu machine, I saw some people doing the following thing: sudo chown mysql:mysql /data/tmp I get confused, I know the meaning of the above command, which is to change the owner of /data/tmp to user 'mysql' and change the group of it to 'mysql' group. But (my questions): 1. Why would one run the above command? If I create a table in my_db database, by default, there will be .frm, .MYD, and .MYI files (data files) be created automatically by MySQL under /var/lib/mysql/my_db/ . So, does the above command changes the default MySQL data directory to /data/tmp/ instead of /var/lib/mysql/my_db/? Basically, I would like to know the purpose and effect of the above command. (better with examples) 2. Where does the 'mysql' owner and group come from? Does the installation of MySQL on a Linux machine automatically create the 'mysql' user and group? or People need to manually create a mysql account for the linux machine?

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  • Indesign Import XML into Automatic Page generation, data merge

    - by taudep
    I've created some InDesign Pages that I want to use as templates. I've created an XML file with all the appropriate data. I want to merge the XML data with the InDesign page and have a few hundred pages automatically generated. I've been reading online and working with InDesign's "Import XML" features without any luck. The documentation has been pretty poor for me. And Google searches haven't returned much fruitful. Here are my present steps: I create a Master Page of my template I add a bunch of text frames where I want the imported data from the XML file to be places I open the "Tags" window and Import and XML file I mark my text frames in the Master Document with the appropriate tags I then add a lot of pages (like 200) to the document Then I use "Import XML" to try and get the data brought in and filled across all 200 pages. This is where I fail. There's something I'm missing. It might be that InDesign doesn't work as I'm expecting... Does anyone have any good tips for mail-merge like functionality with an XML document and auto-generation of InDesign pages? By the way, here's an example of Adobe's great documentation for merging repeated XML elements. There's got to be more... InDesign CS4 Docs: XML-Importing XML-Working with Repeating Data Here's some of the sample XML, notice the ITEM will repeat. I've also truncated the data in the "desc" tag: <output> <item> <user_name>taude</user_name> <date>2009-02-21</date> <title>Wishful Thinking</title> <desc>Skiing up in Vermont on a beautiful day. This photo of</desc> <thumbnail>http://www.blipfoto.com/thumbs/5371/2009/big/color/96104200949a162672e1996.15963073.jpeg</thumbnail> </item> <item> <user_name>taude</user_name> <date>2009-02-22</date> <title>Skiing Self Portrait</title> <desc>I was inspired by ML's self-portrait while </desc> <thumbnail>http://www.blipfoto.com/thumbs/5371/2009/big/color/36547696749a2c5782308e0.91477014.jpeg</thumbnail> </item> </output> Here's what my imported XML looks like with the InDesign Structure:

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  • SQL Windowing screencast session for Cuppa Corner - rolling totals, data cleansing

    - by tonyrogerson
    In this 10 minute screencast I go through the basics of what I term windowing, which is basically the technique of filtering to a set of rows given a specific value, for instance a Sub-Query that aggregates or a join that returns more than just one row (for instance on a one to one relationship). http://sqlserverfaq.com/content/SQL-Basic-Windowing-using-Joins.aspx SQL below... USE tempdb go CREATE TABLE RollingTotals_Nesting ( client_id int not null, transaction_date date not null, transaction_amount...(read more)

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  • Internet Explorer 10 (Metro App) on Windows 8 Pro (RTM) crash

    - by ferpaz
    Internet Explorer 10 (Metro App) on Windows 8 Pro (RTM) does not start and crash with this error: Log Name: Application Source: Application Error Date: 27/08/2012 19:21:29 Event ID: 1000 Task Category: (100) Level: Error Keywords: Classic User: N/A Computer: DELL-OPE3.red.aseinfo.com.sv Description: Faulting application name: iexplore.exe, version: 10.0.9200.16384, time stamp: 0x50107ebe Faulting module name: iertutil.dll, version: 10.0.9200.16384, time stamp: 0x50109c90 Exception code: 0xc0000005 Fault offset: 0x0000000000172f0b Faulting process id: 0xadc Faulting application start time: 0x01cd84bb737cfa16 Faulting application path: C:\Program Files\Internet Explorer\iexplore.exe Faulting module path: C:\WINDOWS\system32\iertutil.dll Report Id: b1597df3-f0ae-11e1-be78-88532e15da73 Faulting package full name: Faulting package-relative application ID: Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Application Error" /> <EventID Qualifiers="0">1000</EventID> <Level>2</Level> <Task>100</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2012-08-28T01:21:29.000000000Z" /> <EventRecordID>7612</EventRecordID> <Channel>Application</Channel> <Computer>DELL-OPE3.red.aseinfo.com.sv</Computer> <Security /> </System> <EventData> <Data>iexplore.exe</Data> <Data>10.0.9200.16384</Data> <Data>50107ebe</Data> <Data>iertutil.dll</Data> <Data>10.0.9200.16384</Data> <Data>50109c90</Data> <Data>c0000005</Data> <Data>0000000000172f0b</Data> <Data>adc</Data> <Data>01cd84bb737cfa16</Data> <Data>C:\Program Files\Internet Explorer\iexplore.exe</Data> <Data>C:\WINDOWS\system32\iertutil.dll</Data> <Data>b1597df3-f0ae-11e1-be78-88532e15da73</Data> <Data> </Data> <Data> </Data> </EventData> </Event> Any suggestions?

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  • Overriding GetHashCode in a mutable struct - What NOT to do?

    - by Kyle Baran
    I am using the XNA Framework to make a learning project. It has a Point struct which exposes an X and Y value; for the purpose of optimization, it breaks the rules for proper struct design, since its a mutable struct. As Marc Gravell, John Skeet, and Eric Lippert point out in their respective posts about GetHashCode() (which Point overrides), this is a rather bad thing, since if an object's values change while its contained in a hashmap (ie, LINQ queries), it can become "lost". However, I am making my own Point3D struct, following the design of Point as a guideline. Thus, it too is a mutable struct which overrides GetHashCode(). The only difference is that mine exposes and int for X, Y, and Z values, but is fundamentally the same. The signatures are below: public struct Point3D : IEquatable<Point3D> { public int X; public int Y; public int Z; public static bool operator !=(Point3D a, Point3D b) { } public static bool operator ==(Point3D a, Point3D b) { } public Point3D Zero { get; } public override int GetHashCode() { } public override bool Equals(object obj) { } public bool Equals(Point3D other) { } public override string ToString() { } } I have tried to break my struct in the way they describe, namely by storing it in a List<Point3D>, as well as changing the value via a method using ref, but I did not encounter they behavior they warn about (maybe a pointer might allow me to break it?). Am I being too cautious in my approach, or should I be okay to use it as is?

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  • SQLAuthority News – Storing Data and Files in Cloud – Dropbox – Personal Technology Tip

    - by pinaldave
    I thought long and hard about doing a Personal Technology Tips series for this blog.  I have so many tips I’d like to share.  I am on my computer almost all day, every day, so I have a treasure trove of interesting tidbits I like to share if given the chance.  The only thing holding me back – which tip to share first?  The first tip obviously has the weight of seeming like the most important.  But this would mean choosing amongst my favorite tricks and shortcuts.  This is a hard task. Source: Dropbox.com My Dropbox I have finally decided, though, and have determined that the first Personal Technology Tip may not be the most secret or even trickier to master – in fact, it is probably the easiest.  My today’s Personal Technology Tip is Dropbox. I hope that all of you are nodding along in recognition right now.  If you do not use Dropbox, or have not even heard of it before, get on the internet and find their site.  You won’t be disappointed.  A quick recap for those in the dark: Dropbox is an online storage site with a lot of additional syncing and cloud-computing capabilities.  Now that we’ve covered the basics, let’s explore some of my favorite options in Dropbox. Collaborate with All The first thing I love about Dropbox is the ability it gives you to collaborate with others.  You can share files easily with other Dropbox users, and they can alter them, share them with you, all while keeping track of different versions in on easy place.  I’d like to see anyone try to accomplish that key idea – “easily” – using e-mail versions and multiple computers.  It’s even difficult to accomplish using a shared network. Afraid that this kind of ease looks too good to be true?  Afraid that maybe there isn’t enough storage space, or the user interface is confusing?  Think again.  There is plenty of space – you can get 2 GB with just a free account, and upgrades are inexpensive and go up to 100 GB of storage.  And the user interface is so easy that anyone can learn to use it. What I use Dropbox for I love Dropbox because I give a lot of presentations and often they are far from home.  I can keep my presentations on Dropbox and have easy access to them anywhere, without needing to have my whole computer with me.  This is just one small way that you can use Dropbox. You can sync your entire hard drive, or hard drives if you have multiple computers (home, work, office, shared), and you can set Dropbox to automatically sync files on a certain timeline, or whenever Dropbox notices that they’ve been changed. Why I love Dropbox Dropbox has plenty of storage, but 2 GB still has a hard time competing with the average desktop’s storage space.  So what if you want to sync most of your files, but only the ones you use the most and share between work and home, and not all your files (especially large files like pictures and videos)?  You can use selective sync to choose which files to sync. Above all, my favorite feature is LanSync.  Dropbox will search your Local Area Network (LAN) for new files and sync them to Dropbox, as well as downloading the new version to all the shared files across the network.  That means that if move around on different computers at work or at home, you will have the same version of the file every time.  Or, other users on the LAN will have access to the new version, which makes collaboration extremely easy. Ref: rzfeeser.com Dropbox has so many other features that I feel like I could create a Personal Technology Tips series devoted entirely to Dropbox.  I’m going to create a bullet list here to make things shorter, but I strongly encourage you to look further into these into options if it sounds like something you would use. Theft Recover Home Security File Hosting and Sharing Portable Dropbox Sync your iCal calendar Password Storage What is your favorite tool and why? I could go on and on, but I will end here.  In summary – I strongly encourage everyone to investigate Dropbox to see if it’s something they would find useful.  If you use Dropbox and know of a great feature I failed to mention, please share it with me, I’d love to hear how everyone uses this program. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology Tagged: Personal Technology

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  • Programming Pearls (2nd Edition) vs More Programming Pearls: Confessions of a Coder [closed]

    - by Geek
    I have been reading very good reviews of the books by Jon Bentley : Programming Pearls (2nd Edition) More Programming Pearls: Confessions of a Coder. I know that these books have been out there for a long time and I feel bad that I haven't read either one . But it is always better late than never . I understand that the second one was written after the first one . So are these two books complementary to each other ? Do the second one assume that the reader has read the first one ? For some one who haven't read either which one would you propose to read up first ?

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  • TechEd 2010 Thanks and Demos

    - by Adam Machanic
    Thank you to everyone who attended my three sessions at this year's TechEd show in New Orleans. I had a great time presenting and answering the really great questions posed by attendees. My sessions were: DAT317 T-SQL Power! The OVER Clause: Your Key to No-Sweat Problem Solving Have you ever stared at a convoluted requirement, unsure of where to begin and how to get there with T-SQL? Have you ever spent three days working on a long and complex query, wondering if there might be a better way? Good...(read more)

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  • Jetzt geht’s los - speaking in Germany!

    - by Hugo Kornelis
    It feels just like yesterday that I went to Munich for the very first German edition of SQL Saturday – and it was a great event. An agenda that was packed with three tracks of great sessions, and lots of fun with the organization, attendees, and other speakers. That was such a great time that I didn’t have to hesitate long before deciding that I wanted to repeat this event this year. Especially when I heard that it will be held in Rheinland, on July 13 – that is a distance I can travel by car! The...(read more)

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  • Creating an Entity Data Model using the Model First approach

    - by nikolaosk
    This is going to be the second post of a series of posts regarding Entity Framework and how we can use Entity Framework version 4.0 new features. You can read the first post here . In order to follow along you must have some knowledge of C# and know what an ORM system is and what kind of problems Entity Framework addresses.It will be handy to know how to work inside the Visual Studio 2010 IDE . I have a post regarding ASP.Net and EntityDataSource . You can read it here .I have 3 more posts on Profiling...(read more)

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  • changing ext4 journal data mode with remount?

    - by Amos Shapira
    I'm tweaking ext4 file system for speed, one tweak at a time. First tweak is to change from "data=ordered" to "data=writeback". To test this, I execute "mount -n -o remount,data=ordered /" but I keep getting "mount: / not mounted already, or bad option". From lots of google'ing I found many questions about similar problems and one answer circa 2001+ext3 which says that you can't change the journal mode with remount. Is this limitation still current?

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  • MySql Data Loss - post mortem analysis - RackSpace Cloud Server

    - by marfarma
    After a recent 'emergency migration' of a RS cloud server, the mysql databases on our server snapshot image proved to be days out of date from the backup date. And yet files that were uploaded through the impacted webapp had been written to the file system. Related metadata that was written to the database was lost, but the files themselves were backed-up. Once I was able to manually access the mysql data files before the mysql server started (server was configured to start mysql on boot), I was able to see that the update time for ib_logfile1, ib_logfile0 and ibdata1 was days old. As with this poster, mysql data loss after server crash, it's as if some caching controller had told the OS / mysql server that it had committed data that was still in cache, and it was lost instead of flushed. I can't quite wrap my head around how the uploaded files got written but the database data did not. I would have thought that any cache would have flushed system wide, rather than process by process. Any suggestions as to how this might have happened?

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  • How to delete Chrome temp data (history, cookies, cache) using command line

    - by Dio Phung
    On Windows 7, I tried running this script but still cannot clear Chrome temp data. Can someone figure out what's wrong with the script? Where do Chrome store history and cache ? Thanks ECHO -------------------------------------- ECHO **** Clearing Chrome cache taskkill /F /IM "chrome.exe">nul 2>&1 set ChromeDataDir=C:\Users\%USERNAME%\AppData\Local\Google\Chrome\User Data\Default set ChromeCache=%ChromeDataDir%\Cache>nul 2>&1 del /q /s /f "%ChromeCache%\*.*">nul 2>&1 del /q /f "%ChromeDataDir%\*Cookies*.*">nul 2>&1 del /q /f "%ChromeDataDir%\*History*.*">nul 2>&1 set ChromeDataDir=C:\Users\%USERNAME%\Local Settings\Application Data\Google\Chrome\User Data\Default set ChromeCache=%ChromeDataDir%\Cache>nul 2>&1 del /q /s /f "%ChromeCache%\*.*">nul 2>&1 del /q /f "%ChromeDataDir%\*Cookies*.*">nul 2>&1 del /q /f "%ChromeDataDir%\*History*.*">nul 2>&1 ECHO **** Clearing Chrome cache DONE

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  • Implementing Silverlight Coverflow with ADO.NET/WCF Data Services in SharePoint 2010

    Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). This feed URL has been discontinued. Please update your reader's URL to : http://feeds.feedburner.com/winsmarts Read full article .... ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • SQL SERVER Force Index Scan on Table Use No Index to Retrieve the Data Query Hint

    Recently I received the following two questions from readers and both the questions have very similar answers.Question 1: I have a unique requirement where I do not want to use any index of the table; how can I achieve this?Question 2: Currently my table uses clustered index and does seek operation; how can I convert [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Solving Null Entity Problems with JPA Data Controls in PS1

    - by shay.shmeltzer
    Turns out there is a slight bug that seems to prevent you from doing interactions (update, scroll) with the results of a JPA named query that you dropped on a page using ADF Binding. People are running into this when they are doing the EJB tutorial on OTN for example. The problem is that the way the binding is set up for you automatically doesn't allow you to actually access the iterator set of records to do follow up operations. When I last checked this was solved in the next release of JDeveloper, but in the meantime there is a quick simple way to resolve the issue by changing the refresh condition of the oiterator in your page binding. Here is a little demo that shows the problem and the solution:

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  • MSFT Excel pivot table links to external data

    - by dreftymac
    Question1: What is the best online forum to ask MSFT Excel questions of the following variety? Question2: How can I link an excel pivot-table to a potentially changing source table without having to re-draw the excel pivot-table layout every time the source table changes data. (Note, the columns are not changing, just the data in the rows). Background: I have an excel 2007 pivot table that is grabbing data from another sheet (an excel "table" ... tables are a new feature of excel 2007). When I change the data in the source table, and then go to the pivot table and press "refresh" ... the pivot table reverts to its "blank" format and requires me to re-drag the columns rows and values. What I want is for the pivot-table to simply re-draw itself without me having to re-create the pivot table layout.

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