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Written by Chris Gountanis
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In software engineering, multi-tier architecture (often referred to as n-tier architecture) is a client–server architecture in which the presentation, the application processing, and the data management are logically separate processes. For example, an application that uses middleware to service data requests between a user and a database employs multi-tier architecture. The most widespread use of multi-tier architecture is the three-tier architecture. N-tier application architecture provides a model for developers to create a flexible and reusable application. By breaking up an application into tiers, developers only have to modify or add a specific layer, rather than have to rewrite the entire application over. There should be a presentation tier, a business or data access tier, and a data tier. The concepts of layer and tier are often used interchangeably. However, one fairly common point of view is that there is indeed a difference, and that a layer is a logical structuring mechanism for the elements that make up the software solution, while a tier is a physical structuring mechanism for the system infrastructure.
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Last Updated on Thursday, 30 September 2010 11:56 |
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Written by Chris Gountanis
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Increasingly, web-enabled devices are capable of determining their orientation; that is, they can report data indicating changes to their orientation with relation to the pull of gravity. In particular, hand-held devices such as mobile phones can use this information to automatically rotate the display to remain upright, presenting a wide-screen view of the web content when the device is rotated so that its width is greater than its height. There are two ways to deal with orientation information in Gecko. The first is the orientation media query. This lets content adjust its layout using CSS, based on whether the device is in landscape mode (that is, its width is greater than its height) or portrait mode (its height is greater than its width).
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Last Updated on Thursday, 30 September 2010 11:57 |
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Written by Chris Gountanis
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Android 2.1 is a minor platform release deployable to Android-powered handsets starting in January 2010. This release includes new API changes and bug fixes. For information on changes, see the Framework API section. For developers, the Android 2.1 platform is available as a downloadable component for the Android SDK. The downloadable platform includes a fully compliant Android library and system image, as well as a set of emulator skins, sample applications, and more. The downloadable platform includes no external libraries. To get started developing or testing against the Android 2.1 platform, use the Android SDK and AVD Manager tool to download the platform into your SDK. For more information, see Adding SDK Components. Android 2.1 does not add significant user features, see the Android 2.0 Platform Highlights document for the latest user features.
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Last Updated on Wednesday, 19 May 2010 15:27 |
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Written by Chris Gountanis
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A CentOS Net Install (CentOS NetInstall) is basically installing from a very small downloaded ISO image which downloads the needed files to complete the full operating system installation on-the-fly. This documentation explains the process of installing CentOS using the HTTP NetInstall method. This method is much faster for basic systems since you don't have to download 4-6 ISO files or one huge DVD based ISO just to get started. If you are installing many systems you may want to look into the stand-alone DVD as it will save time in the end.
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Last Updated on Tuesday, 16 August 2011 15:06 |
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Written by Chris Gountanis
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The IT Crowd is set in the offices of Reynholm Industries, a fictional British corporation in central London. It focuses on the shenanigans of the three-strong IT support team located in a dingy, untidy and unkempt basement – a stark contrast to the shining modern architecture and stunning London views enjoyed by the rest of the organisation. The obscurity surrounding what the company does serves as a running gag throughout the series – all that is known is that the company bought and sold ITV (a fact which Denholm Reynholm forgot completely), and once made part-year profits of "eighteen hundred billion, billion". The team consists of what Douglas Reynholm describes as "a dynamic go-getter (Jen), a genius (Moss) and a man from Ireland (Roy)".
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Last Updated on Wednesday, 02 June 2010 15:23 |
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Written by Chris Gountanis
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Values are deeply held beliefs that path our daily decisions. Living by these values personally and professional can stabilize your life in many ways. Reduced stress and respect by others for staying your path will be achieved. Overall this will improve your daily life personally and professionally. Developed values can change over time. Having an open mind and allowing new life lessons to penetrate your mind can alter these rule sets. This will allow you to be an adaptable person with the capability for change. The only down side to this change is many quick changes to the facts being presented to you on a daily basis from friends, media and advertisements. The term "values" means different things in many different contexts. It is pretty obvious that it is not clear to everyone what the term "values" means. These terms can have different meanings to different people. Having a clear set of personal values will help us build the credibility and trust that facilitate leadership. The most challenging times for leaders are times when they must lead others into unchartered territory, leading innovation, and managing challenges as they arise.
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Last Updated on Friday, 12 December 2008 14:20 |
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