Tuesday, September 2, 2008

Apple Certifications Exam 9L0-509

At any one time there is an enormous variety of file formats in use for various purposes, so how do you choose which one 9L0-402 is best? There are three type of file formats:

* Proprietary, closed specifications
* Proprietary, open specifications
* Non-proprietary, open specifications

Proprietary, closed specifications are used by some of the most common software, if you don't use them yourself you probably get sent them. However because these formats are not publically documented, you are held hostage to the company making the software. If they decide not to support old versions of their 9L0-509 own format, suddenly you can't open your old files! Then your choice of software is greatly dependant on any new softwares ability to second-guess the format used by your old software. Examples of this type of format are those from the Microsoft Office Word doc format and Excels xls format, and Adobe Photoshop's Document (.psd).

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