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Two of the most popular database systems used by web developers today are MySQL and Microsoft’s MS SQL server. Both are similar in regards to being storage and retrieval systems. The two systems support primary keys, along with key indices which allow you to speed up queries and constrain input. Furthermore, both systems offer some form of support for XML.

Apart from price, which is the obvious difference, what distinguishes these two systems, and which one is right for you? We’ll overview both products, point out the major differences and explain the advantages and disadvantages of using them for your business.

Open-source vs. Proprietary

When it comes to these two databases, the differences begin with the open-source nature of MySQL vs. the closed, proprietary structure of the SQL Server. MySQL is an extensible, open storage database engine, offering multiple variations such as Berkeley DB, InnoDB, Heap and MyISAM. On the other hand, with the Microsoft product, you are limited to a Sybase-derived engine through both the good and bad times.

When considering how MySQL integrates seamlessly with a number of programming languages and other web-based technologies, it certainly has the advantage over MS SQL in the way of compatibility, as the SQL Server is known to work better with other Microsoft products.

Licensing

Contrary to popular belief, the MySQL system isn’t always free. On the other hand, it is always more affordable. In regard to both products, licensing fees are based on a two-tiered scheme. With MS SQL, the best way to obtain a developer’s license is to buy a license for the Microsoft Developer or Microsoft Visual Studio suite. Both provide you with a free SQL Server license for development use. If you want to use the product in a commercial environment, you need to at least purchase the SQL Server Standard Edition – which could set you back over $1,000 for a few client connections.

Because MySQL is an open-source system under the GNU General Public License, developers can use it at no cost as long as the associated projects are also open-source. However, if you intend to sell your software as a proprietary product, you would need to purchase a commercial license, which costs about $400 for up to nine clients. Depending on the project and your funds, MySQL may have the advantage here.

Technical Differences

The open-source vs. proprietary battle alone is a leading cause why some users choose one system over the other. However, there are a few differences from a technical aspect as well.

For instance, MySQL doesn’t offer full support for foreign keys, meaning it doesn’t have all the relational features of MS SQL, which is considered a complete relational database. Some versions of MySQL also lack full support for stored procedures – the biggest disadvantage being the MyISAM system, which doesn’t support transactions.

Performance

In the way of performance, MySQL is the clear leader, mainly due to the format of its default table, MyISAM. MyISAM databases leave a small footprint using little disk space, memory and CPU. While the system runs on the Windows platform without flaw, it tends to perform better on Linux and other UNIX-like systems. Because of its stability, many internet powerhouses such as Yahoo! use MySQL as their back-end database.

When it comes to performance, MS SQL’s strength of being packed with more features than other systems is perhaps its biggest disadvantage. Although most of these features are designed for performance tuning, they tend to sacrifice other essential elements. The cost here is complexity and the hogging of resources in the way of storage and memory, which leads to poorer performance. If you lack the knowledge and sufficient hardware to support an SQL server, you would be better off with another database management system.

Security

These two database systems are pretty much deadlocked in regards to security. Both come with adequate security mechanisms by default, bearing you follow the directions and keep the software updated with security patches. Both operate over known IP ports which unfortunately attracts a wealth of intruders, a downside that can be attributed to both products. The good thing is that MySQL and MS SQL allow you to change ports just in case the default becomes too vulnerable.

Recovery

As far as recovery goes, the SQL Server has a definite advantage over MySQL, which tends to fall a little short with its MyISAM configuration. A UPS system is mandatory with MyISAM as it assumes uninterrupted operation. If a power outage should occur, it could result in the corruption and loss of critical data. With the SQL Server, data corruption is more unlikely. The data travels through various checkpoints while passing from your keyboard to the hard disk and through the monitor. Additionally, the SQL Server keeps track of the process, even if the system unexpectedly shuts down.

The Best Choice

As you can see, both systems have their advantages and disadvantages. From our perspective, any product that allows you to be efficient is a good database; anything other than that isn’t worthy of your time and frustration. When it comes to MySQL and MS SQL, the decision all boils down to the situation and most importantly, what you’re looking to accomplish.

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This is how to recover files (undelete) from your computer. I use a cool free program called photorec to recover the data. You can recover movies, photos, mps, text, just about anything. Photorec has versions for window, linux, and mac so it should be similar to how I show you in Ubuntu. For written instructions visit nickmcd.tv

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YOU NEED TO GET THESE FILES BEFORE STARTING: ** WARNING! THIS WILL ERASE ALL YOUR DATA. BACK UP WITH TITANIUM BACKUP OR SIMILAR BEFORE UPGRADING! ** (note: won’t work on CDMA model – GSM only) === forum.xda-developers.com – Odin3 v1.7 (Odin3 v1.7.zip – contains the Odin EXE to flash the files below) – PIT file (gt-p1000_mr_PIT.zip – contains 1 .pit file) – dbdata file (dbdata.zip – contains 1 .tar file) === www.multiupload.com – Firmware file (P1000XXJQ1_P1000XXJQ1_P1000XXJPZ.zip – contains 1 tar file) === OPTIONALLY: forum.xda-developers.com (if you want to root your galaxy tab) – CF Root file (CF-Root-TAB7_XX_OXA_JQ1-v3.3-CWM3RFS.zip – contains 1 tar file) === Hope you find this helpful! Follow me on Twitter twitter.com

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How to flash a ROM (CM7 Nightly #12) using ClockworkMod 2.6.0.1. I have created a folder called “x_flashables_x” to keep all my flashable files in. Then using ClockworkMod I can do all the necessary wipes including Data, Cache, and Dalvik Cache. Then “flash file from SD”. Choose the file which is in my x_flashables_x folder and flash. Don’t forget to flash the latest Gapps after the ROM.

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There can be several reasons for Flash Drives not being detected by your computer.

First your computer is not able to provide drivers for your Flash Drive. Now, for your information, you do not need to install any drivers from outside if you are using Windows 2000 SP4,Windows XP or Windows Vista as they come with native support for these devices.

If you are thinking that you are already using one of these versions of windows still your computer is not able to mount your Flash Drive. Don’t worry,that’s why I am writing this article. Just read on…

If your are not on one of these Windows version then your problem can be easily resolved by just installing the drivers which you get on a disc that comes with your Flash Drive. If you did not receive any disc,try checking out the manufacturer’s website and it should be there for sure. If still no luck,then try contacting me….

Remember, everything is explained here assuming that you are on Windows XP but need not worry as other Windows like Vista should work the same way.

Let’s come back to the topic..

There are several possible reasons for Flash Drives not mounting on your computer. Mentioned below are few of them:

Drive Letter Conflict

Flash Drive not formatted properly

Windows require some patch or update

Problem with the USB port

Physical connection problem

So, let’s start with the first one, that is, drive letter conflict.

Now, this can be the problem when you are trying to use your Flash Drive in a network environment. The best possible solution to this problem is to change the drive letter assigned to Flash Drive. This can be done by going to Disk Management and right clicking on Removable Drive and then clicking on Change Drive Letter. You can select any drive letter which is not assigned by windows to any drive or partition in any computer inside a network. Also, before changing the drive letter it’s recommended to check if your Flash Drive is showing in Device Manager under Disk Drives. If it’s not there that problem can be something else.

If changing Drive Letters does not help and drive is showing in Device Manager then probably you should try disconnecting that computer from the network by taking out the network cable or if you are inside a corporate environment then try contacting you IT deptt to know the drive letter not being used anywhere.

Let’s talk about the second scenario. If the drive is not formatted properly that means that it’s mounting up and being detected by the computer as well. It’s just would be giving a message to Format the Drive when trying to access it. This can happen if the File System has corrupted on Flash Drive or its not formatted in the supported format. For example, if you are trying to use a Flash Drive formatted in Ext2 file system in Windows Computer. The only solution to this problem is to format the drive in the supported format. For windows you should always format the drive in Fat or Fat32 and in Macintosh you should use MSDOS as this will also be supported by Windows computer. Please note formatting the Drive will ERASE all data. So, if you have any important data kindly try using a different computer to see if drive works or contact a Data Recovery company. If you want some reference kindly leave a comment.

Also, if you are not able to format the Flash Drive, please try using the HP USB Disk Storage Format Tool. It’s made by HP but works on generally all Flash Drives.

Now let’s talk about problems that can happen because of any updates or patches. No matter if you have the latest service pack for your Vista or XP computer. Still, there are few updates or rather say patches which need to be installed if you face any such problem.

Vista Patch

Please find the link to Vista Patch at the end of this article.

As per Microsoft the patch will fix the following issues:

” When the computer resumes from a suspend state or from a hibernation state, the computer stops responding. Additionally, you receive a “0×9F” stop message on a blue screen.

” The computer takes a long time to resume from a suspend state or from a hibernation state.

” The computer takes a long time to resume from a suspend state or from a hibernation state when you use a VIA controller.

” The computer stops responding when you use an Authentic USB fingerprint reader. Additionally, you receive a “0xFE” Stop error on a blue screen or a “0×9F” Stop error on a blue screen.

” The computer stops responding when you use a USB Bluetooth audio device.

” The computer takes a long time to resume from a suspend state or from a hibernation state when you use an Enhanced Host Controller Interface (EHCI) controller.

” The computer stops responding when you remove a USB device. Additionally, you receive a “0xFE” Stop error on a blue screen.

” When a computer resumes from a suspend state or from a hibernation state multiple times, you receive a “0xFE” Stop error on a blue screen.

So go and install this even if you are facing a different problem related to but not similar to this.

Another patch for XP Service Pack 1 is also include at the bottom.

There are chances of problems with USB ports as well which happens rarely but the possibility is still there. The best way to identify is to attach any other USB device on the same port and check if that device works or not. For Example, USB Printer. Also of you are using a Desktop and inserting the drive in some front USB port then try using some port at the back.

Here , I would like to add one more point. If you have a high capacity drive like 8 GB and you are trying to use it on an old computer then due to inadequate power support the drive may not mount properly.

Sometimes, even if the icon for Removable disc appears under My Computer,the drive may not work properly as the complete capacity will not be mounted in case of inadequate power. You can check this by right clicking on Removable Disc and then clicking on Properties. If one this window, both free and used space is showing 0 KB then this can be the possible problem. In order to fix any issues related to inadequate power supply you can purchase USB Power Hub from any computer store and attach it to the USB port. What it does is that it will convert the low power supplied by USB port to little high power.

But, remember this problem generally happens in case of old computers. Before purchasing USB power hub, you can also try the back port of your computer if you are on Desktop.

And Last but not the Least, improper physical connection is the general cause for Drives not getting detected. This may happen if USB port or connector on Flash Drive has bent or physically damaged due to which drive is not able to make a contact with pins on USB port. In this case, you should also look the inside area of port or connector and if any damage found please take it to some local technician of Drive manufacturer to get it fix.

So, this was my first article. Any feedback will be appreciated.

Thanks

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