A number of new geospatial viewing tools from major players in the Internet industry have recently appeared on the scene and are taking the geospatial world by storm. Google,Yahoo, Microsoft, and Amazon have all released web-based mapping tools in the recent past, and collectively these new players to the industry have raised the bar for Internet mapping. Although their functional capabilities don’t provide anything we haven’t seen in web offerings from traditional GIS vendors, their emergence has been significant in that they have managed to capture a wider audience. Google, in particular, has emerged as the leader of this pack with it’s recently released Google Maps product which provides a slick, highly responsive visual interface built using AJAX technologies along with detailed street and aerial imagery data, and an open API allowing customization of the map output including the ability to add application specific data to the map.
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The basic elements for an application using the AJAX technologies, JavaScript and the XMLHttpRequest object, are not difficult to understand and there are many articles on the web that show how to use this object and declare that being AJAX. I think there are a lot more topics that should be understood and talked about.
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This document outlines a chapter in the book Implementing Mobile Web 2.0 by Ajit Jaokar published by futuretext (Feb 2009). It is released separately as a stand-alone chapter. Here, we discuss the role of the next generation SIM (Subscriber Identity Module) card, referred to as SCWS (Smart card web server) SIM within Mobile Web 2.0. To explain the background, this document includes other sections from the book so that it becomes as complete document in itself.
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Mobile workers can have wireless access to Microsoft Exchange Server 2003 email and calendar information using the Treo™ 650smartphone by palmOnewith built-in Exchange ActiveSync ® technology. With this solution, companies don’t incur additional expense and management overhead involved in evaluating, purchasing, installing, and updating third party behind-the-firewall servers. While these additional servers do provide some unique benefits, many businesses won’t need more than what’s offered through Exchange ActiveSync—functionality that’s built in to Exchange Server 2003 and the Treo 650 smartphone. With the latest mobile technology, Treo 650 smartphone users have fast and easy access to the most current email and calendar information on the corporate Exchange server wherever they can get a cellular signal.
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The Web paradigm adds a whole new level of complexity to traditional application development. The phrase “You’ve got just 15 seconds to grab a user’s attention” is fast becoming a cliché, but it really sums up the idea. You’re no longer just creating an application, but a commercial or a TV show, and the user has his or her hand on the remote. It’s called surfing the Web for a reason. As a developer, you need to be keenly aware of the impact of architectural and implementation decisions on application performance and scalability. With this technology, as we are discovering, we are still dealing with a client/server model.
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DCOM provides a standardized basis for creating and integrating distributed software components. External client applications can use DCOM as infrastructure for their communication with SAP servers, to access R/3 components. With this technology, R/3 components such as BAPIs or remote function modules appear as COM objects and use the runtime environment of the Microsoft Transaction Server (MTS). The DCOM Connector provides a C++ Template Library developed by SAP, which you can use to create COM objects from business objects of the R/3 system and administer them. The two scenarios below describe the different uses of the DCOM Connector: PC Client Applications
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