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  • Survey of MySQL Storage Engines

    MySQL has an interesting architecture that sets it apart from some other enterprise database systems. It allows you to plug in different modules to handle storage. What that means to end users is that it is quite flexible, offering an interesting array of different storage engines with different features, strengths, and tradeoffs.

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  • C++ Without Source Files

    - by Snowman
    Bjarne Stroustrup mentions in his book "The C++ Programming Language, 4th Edition" that not all C++ implementations use files to store and compile code: There are systems that do not store, compile, and present C++ programs to the programmer as sets of files. (Chapter 15, page 419) Later in the chapter, he reiterates that certain implementations do not use files but he does not give any examples. How would such an environment function compared to a more common file-based environment?

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  • Cannot access Windows via grub after new dual-boot Ubuntu install

    - by user287474
    I previously installed Ubuntu on a computer that had Windows XP on it and got it successfully to run alongside it. (access both OS systems) Now I installed Ubuntu again on my MSI notebook with Windows 8.1, and I cannot access the GRUB without hitting escape on startup, and even then, I can no longer open windows. Before all of this, I created a recovery point, file history and saved a back up on a external hard drive incase I did anything wrong. Now how can I revert my computer back to it's state before installation.

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  • How to backup/restore full-disk encryption ubuntu 11.10?

    - by ggc
    How to backup/restore full-disk encryption ubuntu 11.10? I would like to put the RAW encrypted file system and restore on another computer. Encryption Details: crypt setup via Ubuntu alterate CD Installer only thing unencrypted is /boot File systems setup: boot- j swap-swap everything else-ext 4 Any suggestions? I have considered backing up the file system stripped of encryption, but I would prefer to keep the os encrypted while transferring. Thanks for any help!

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  • How do I configure Ubuntu Server as Primary Domain Controller for Windows 7

    - by B. C.
    I have a Mac server running OS X Server 10.5 Server and as a PDC for our Windows XP systems. I'd like to use the OS X Server as a PDC for our Windows 7 boxes but the version of Samba in OS X Server is not compatible with Windows 7. It appears that my best bet is to use Ubuntu Server as my PDC. I want the Windows boxes to obtain authentication information from the Mac Server's LDAP. Any suggestions are appreciated.

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  • A Look At The Three Best CMS Today

    The use of WCMS softwares or Web Content Management Systems have made it easier for many web designers and developers to make quick changes within their websites. However, the true advantage of using... [Author: Margarette Mcbride - Web Design and Development - April 13, 2010]

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  • Popularity Of Web CMS

    What is the benefit of using CMS in web designs? Content Management Systems or CMS is a software used in many industry to manage work flow in a collaborative environment. One of the most popular type... [Author: Margarette Mcbride - Web Design and Development - May 12, 2010]

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  • A quick look at: sys.dm_os_buffer_descriptors

    - by fatherjack
    SQL Server places data into cache as it reads it from disk so as to speed up future queries. This dmv lets you see how much data is cached at any given time and knowing how this changes over time can help you ensure your servers run smoothly and are adequately resourced to run your systems. This dmv gives the number of cached pages in the buffer pool along with the database id that they relate to: USE [tempdb] GO SELECT COUNT(*) AS cached_pages_count , CASE database_id ...(read more)

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  • Ubuntu open to greater touch

    <b>The Register:</b> "You'll want to touch Ubuntu in personal places - like in your kitchen or in your car. At least that's what Canonical hopes, as it works on architectural changes and business deals to put the Linux distro on more embedded systems."

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  • Information About Mambo and Joomla

    JOOMLA and MAMBO was originally developed by a team called Mambo. In 2005, the main developers of Mambo left the team and build the JOOMLA system. Regardless of the history of these two systems, they have turn into a leading hosting system in the industry. These two CMS platform software is the most easiest to use and manage content management that is why it is the most preferred CMS software by most web developer.

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  • From Obsolete Servers to Private Cloud in 3 Easy Steps

    <b>Serverwatch:</b> "Our plan was to build a private cloud, for free, using open source operating systems and virtualization. Even with no money, we still had projects on the table that had to be done. We called our experiment, 'Nebulous,' named after the cloud. The end result was better than we had imagined."

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  • Landscape-like tool to distribute security upgrades to OS?

    - by Ichikata
    i'm looking for an alternative to Landscape, Spacewalk (for RHEL), or CTL to perform a specific job. I need to control and apply OS upgrades on ubuntu systems, for 100+ servers, and so far i wasn't that lucky. I've tried Approx tool (similar to apt-proxy), but it just caches the content, and what i really need to do is set update milestones, apply the upgrades to QA servers, validate, then Stage environment, and so on to Production. I hope I was clear enough, any answer will be much appreciated.

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  • Help us improve SQL Source Control

    We've been working really hard on SQL Source Control, and need your input. We're currently working on suggestions from our user forum and on an updated migrations feature that supports all source control systems and works across branches. We'd love it if you could spare 10 minutes to complete this survey. If you complete the survey by Friday June 14, you could win a $100 Amazon voucher. There are two up for grabs!

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  • No upgrade option when booting from USB (12.04)

    - by Ramzi Njeim
    I am trying to upgrade my ubuntu 11.10, i know that it is better to upgrade using a live cd/usb, i booted from the live usb, followed the instructions as usual, but only found three options: Cleen install Install alongside your other operating systems Other The upgrade choice was missing. I even tried installing it after running ubuntu 12.04 from usb, and ended up with the same result. I have a dual boot Ubuntu 11.10 and Windows 7, i think it is only seeing the windows 7 and missing the ubuntu 11.10 partition. Any help ?

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  • Representing a world in memory

    - by user9993
    I'm attempting to write a chunk based map system for a game, where as the player moves around chunks are loaded/unloaded, so that the program doesn't run out of memory by having the whole map in memory. I have this part mostly working, however I've hit a wall regarding how to represent the contents of each chunk in memory because of my so far limited understanding of OOP languages. The design I have currently has a ChunkManager class that uses a .NET List type to store instances of Chunk classes. The "chunks" consist of "blocks". It's similar to a Minecraft style game. Inside the Chunk classes, I have some information such as the chunk's X/Y coordinate etc, and I also have a three dimensional array of Block objects. (Three dimensional because I need XYZ values) Here's the problem: The Block class has some basic properties, and I had planned on making different types of blocks inherit from this "base" class. So for example, I would have "StoneBlock", "WaterBlock" etc. So because I have blocks of many different types, I don't know how I would create an array with different object types in each cell. This is how I currently have the three dimensional array declared in my Chunk class: private Block[][][] ArrayOfBlocks; But obviously this will only accept Block objects, not any of the other classes that inherit from Block. How would I go about creating this? Or am I doing it completely wrong and there's a better way?

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  • Trying to find resources to learn how to test software [closed]

    - by Davek804
    First off, yes this is a general question, and I'd be perfectly happy to move this to another portion of SE, but I didn't see a more fitting sub. Basically, I am hoping a more experienced QA tester can come along and really fill in some basics for me. So far, websites seem to be sparse in terms of explaining languages involved, basic practices, etc. So, I'm sorry in advance if this is too general, but towards the end of this post I ask some specific questions if it's just absolutely unacceptable to speak in general terms. I just landed a position as Junior Systems and QA Engineer with a social media startup. Their QA and testing is almost nonexistent, so if I do a good job, I imagine I'll find a lot of bugs and have a secure role in the business. I'm pretty good with the systems aspect of my role, but I need to learn more about the QA and testing aspects. We run hardware that's touchscreen based - the user can use and interact with the devices. So, in terms of my QA role, in the short term, I need to build scripts to test the hardware/software as a 'user' to try to uncover bugs. First off, what language should these scripts be written in? Does anyone have some examples? What about the longer term 'automated testing'? I'm familiar with regression testing as the developer adds in new features, sure, but the 50,000 other types of testing, not so much. Most of our hardware runs dotnet/C# code, with some of the servers running Java - but I don't expect to need to run tests on the Java side at this point. I hope to meet with one developer today and try to get a good idea of the output from the hardware so that I can 'mock' this data that gets sent to servers, to try to bugtest. Eventually, we will be moving the hardware to be closer to where I live and work, so that I can test virtually and on real hardware. So a lot of the bugs we're dealing with now are like this: the Local Server, which kiosks report their data to gets updated from the kiosks, but the remote server does not. Or, vis versa when the user registers on a kiosk, the remote server updates but the local server does not. But yeah, without much more detail, I imagine a lot of this info isn't helpful. I've bought a book "How Google Tests Software", but it's really a book more about 'how their software testing is different from Microsoft'. It doesn't teach how to test so much as why their methods are better. Does anyone have a good book that I can buy? An ebook maybe? My local Barnes and Noble kinda had a terrible selection. I also figure a book from 2005 is not necessarily that good either.

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  • Linux: Configure Xorg X11 Window System

    <b>nixCraft:</b> "My xorg.conf file is missing as I deleted accidentally for some reason. Now, Xorg try to probe my hardware on every startup. How do I configure Xorg under Debian or any Linux distro / operating systems?"

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  • Custom Business Application Development in PHP - Features & Benefits

    A revolution is taking place within the business application arena today. Just a few years back most custom business applications such as CRM, ERP, data mining and other business data information systems were inflexible and expensive applications. The database ran on a server within the company's compounds and each desktop machine was running a client application.

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  • 2.6.34 is Out; Let's Review

    <b>Linux Magazine: </b>"If you blinked you might have missed the announcement of the new 2.6.34 kernel. Things have been happening very quickly around file systems and storage in the recent kernels so it's probably a good idea to review the kernels from 2.6.30 to 2.6.34 and see what developments have transpired."

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  • No Time for IT? Try Managed Services

    If maintaining your small business computer systems is a drag on your time and psyche, consider IT outsourcing. It frees up time, delivers better results, and a recent study shows it&#146;s more affordable than you might think.

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