Modern Geographical Information Systems (GIS) [1] provide a service-oriented architecture for interacting with geographical data sets and related maps. Web-based GIS systems are architected around the same principles as more general Web service systems based on SOAP [2], WSDL [3], and REST. Mirroring the World Wide Web Consortium and OASIS Web service standards-making bodies, the Open Geospatial Consortium [5] defines open standards for messages, XML data formats, and access protocols that are specific to the GIS community. In addition to OGC-based services, there are many companies (such as ESRI and AutoDesk) that provide proprietary, commercial solutions. Services from these various providers are not normally interoperable.
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There’s a new trend in wireless telecommunications, Internet: Internet connectivity via handheld devices. More people are buying wireless handheld devices such as cellular phones, pagers, personal digital assistants (PDAs), and they demand access to onlineresources at any timefromany location. Over thepast few years a tremendous number of wireless devices different in their characteristics appeared on market. Developments of web application for these devices become challenging experience due to the following reasons [1]:
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Businesses that use Microsoft Access eventually begin to struggle against its limitations. Now they have an alternative: Move data repositories to a system that provides better performance and reliability and that is more flexible in how it allows information to be used. NuSphere has the technology you need to follow this course, Gemini the table type for the MySQL database. Together, Gemini and the MySQL database provide a business strength database server that runs under Windows, Linux, or Unix. Gemini provides performance and reliability enhancements such as row-level locking, transaction support, and automatic crash recovery.
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The .NET platform claims to be a melting pot that allows the integration of different languages in a common framework, sharing a common type system, CTS, and a runtime environment, CLR (Common Language Runtime). Each .NET compiler generates portable MSIL byte-code (MicroSoft Intermediate Language). By assuming compliance to the CTS type system, components inter-operate safely.

The .NET framework is actually well suited for object-oriented languages which have an object model close to the one of C# or Java. Unfortunately, languages with other kinds of object models, type systems or supporting different programming paradigms (such as functional programming .. . ) do not fit in .NET as well as C# does. Writing .NET compilers for them requires much more efforts.
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Reflective programming is becoming popular due to the increasing set of dynamic services provided by execution environments like JVM and CLR. With custom attributes Microsoft introduced an extensible model of reflection for CLR: they can be used as additional decorations on element declarations. The same notion has been introduced in Java 1.5. The annotation model, both in Java and in C#, limits annotations to classes and class members. In this paper we describe C# a, an extension of the C# programming language, that allows programmers to annotate statements and code blocks and retrieve these annotations at run-time. We show how this extension can be reduced to the existing model. A set of operations on annotated code blocks to retrieve annotations and manipulate bytecode is introduced. We also discuss how to use C# to annotate programs giving hints on how to parallelize a sequential method and how it can be implemented by means of the abstractions provided by the run-time of the language. Finally, we show how our model for custom attributes has been realized.
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This paper provides an introduction to writing concurrent programs with “threads”. A threads facility allows you to write programs with multiple simultaneous points of execution, synchronizing through shared memory. The paper describes the basic thread and synchronization primitives, then for each primitive provides a tutorial on how to use it. The tutorial sections provide advice on the best ways to use the primitives, give warnings about what can go wrong and offer hints about how to avoid these pitfalls. The paper is aimed at experienced programmers who want to acquire practical expertise in writing concurrent programs. The programming language used is C#, but most of the tutorial applies equally well to other languages with thread support, such as Java.
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The purpose of these tutorials is not to teach you Microsoft Access, but rather to teach you some generic information systems concepts and skills using Access. Of course, as a side effect, you will learn a great deal about the software enough to write your own useful applications. However, keep in mind that Access is an enormously complex, nearly- industrial-strength software development environ- ment. The material here only scrapes the surface of Access development and database programming.
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This tutorial is intended for computer science students who need a quick introduction to Microsoft Access, but it will be useful to anyone needing such an introduction. To get the full benefit of this tutorial, you will need a computer running one of Microsoft Windows 95 or higher, Microsoft NT 4.0 or higher, or Microsoft Windows 2000. You will also need to have a copy of Microsoft Access 2000/2002 installed. Introduction Though Microsoft Access is NOT synonymous with database systems, there are more copies of Microsoft Access in use than any other database system.
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