On Demand Applications - Enterprise Java Bean Application Development With a Three-Tier Architecture

Enterprise java beans is basically a server side component architecture for developing modular enterprise applications based on the java platform.EJB basically encapsulates the business logic and implements back end business logic of an enterprise application.

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Any mention of enterprise java bean application development would be incomplete without gaining an understanding of what a java session bean actually is. Java session beans are actually java components that run in either stand -alone EJB containers or EJB containers that are part of the standard java platform enterprise edition application servers. These java beans are typically used to model a particular task or use case such as input of customer information or executing a process that maintains a conversation state with a client application.

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Most database driven applications that are developed using open source technologies have a three-tier structure. The web application itself runs in the browser of a desktop or a laptop. Users can only access the front end of the application to input data or search strings. Java being platform independent allows applications to be accessed on any device like a pda or cellphone or any telnet device.

Enterprise java bean application development occurs by employing a three-tier architecture consisting of a front end known as the web container, an EJB container, the third tier being the database. This three-tier structure has proved to be immensely useful for enterprise application development.

The application when accessed on any telnet device renders a user interface complete with data entry screens and submit buttons on to the user's device. This interface is usually developed by using any of the technologies such as java server pages, java server faces, or java servlets. Any event fired by the user like a search string or a request to add certain items into a shopping cart invokes a call session bean running in an Enterprise java bean container. Any of the above-mentioned technologies JSP,JSF, java servlets can be used to call a session bean. Since the Enterprise java bean container is connected to the database, it has the capability to process the queries of the users. Once the session bean is invoked , it processes the request and sends a response back to the web application. The web application then formats the response as required and returns a response to the client end.

Being open source EJB application development has a very bright future in the enterprise application development space in the times to come.

On Demand Applications - Enterprise Java Bean Application Development With a Three-Tier Architecture

EJB based Java Development Services [http://www.icreonglobal.com] makes the J2EE Architecture more powerful with the help of java web development [http://www.icreonglobal.com/java-development.shtml] thats why Outsource Java services are more popular comparison open source technologies.

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Enterprise Integration Applications (EIA)

We have seen that ERP systems have two significant limitations:
First, ERP systems provide current status only, such as open orders. Managers often need to look past the current status to find trends and patterns that aid better decision-making.

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Second, Data in the ERP application is not integrated with other enterprise or division systems and does not include external intelligence.

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There is another side of this problem. In many ERP implementations, all the systems in the organization would not have been covered by the ERP functionality. There will still be a few systems, which work outside the ERP system. But for the ERP system to function smoothly, data from other applications must be integrated with the ERP system. While the wide ranging Prospero-type solutions require a significant amount of tinkering, pre-configured solutions, such as those offered by CrossWorlds, are designed to be implemented with a minimum of fuss.

Katrina Garnett, CrossWorlds founder, President and CEO, says pre-configured EIA solutions make sense for firms that don't want to be saddled with a major development project. According to her, most organizations need to link their ERP only to a relatively select group of mainstream applications. So for such organizations, a pre-configured EIA solution is the best option.

CrossWorlds software includes out-of-the-box integration for front-office to back office applications from such vendors as Aurum software Inc. and VantiveCorp. as well as ERP packages from SAP, PeopleSoft, Baan, and others. The company's approach incorporates an NT-based server and a number of business process components along specific application connectors.

Given this complexity, finding the right EIA tool for an application integration project requires a substantial amount of research. Since the EIA software market is in its formative stages, some vendors are still struggling to meet the customers' exact needs. Most vendors have the popular applications pretty well covered, but might run into problems when trying to integrate an ERP with an obscure or custom application. At the same time, major ERP vendors themselves are beginning to address the need to link their products to front-office applications. A recent report from Hurwitz Group Inc. says that ERP vendors such as SAP, Oracle and Baan are developing their

own compatible front-office solutions. This means availability of better integrated options.Getting an EIA to link applications flawlessly can be tricky. So why tackle ERP integration at all? Simple, in any event, it's still usually easier to create an integration link than to develop a custom coded solution in-house.

Enterprise Integration Applications (EIA)

More Information for ERP http://www.abouterp.com

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Corning Enterprise Fiber Optic Cable - Types and Applications

Corning Cable Systems (also called CCS) provides a very complete fiber cable product line for enterprise networks. Enterprise fiber network market includes universities, businesses, medical compuses, and more. Application types vary a lot from indoor to outdoor. So let's dive into the types of fiber cables Corning provides in this market.

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Corning's Indoor Fiber Cables for Enterprise Networks

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a) Indoor Tight Buffered Fiber Cable

Corning's MIC Riser Cables are designed for use in riser and general purpose environments for intrabuilding backbone and horizontal installations. These multi-fiber cables use 900 µm TBII Buffered Fibers which makes easy, consistent stripping and facilitate termination. This cable has a dielectric central member, the fibers are surrounded by dielectric strength members and protected by a flame-retardant outer jacket. The all-dielectric cable construction requires no grounding or bonding, making these cables ideal for routing inside buildings including riser shafts, to the telecommunications rooms and workstations.

b) Indoor Ribbon Fiber Cable

Corning's Ribbon Plenum Cables are designed for use in plenum, riser and general purpose environments for intrabuilding backbone installations and for high-fiber-count data centers. These cables consist of 2 to 216 fibers organized into 12-fiber ribbons inside a central tube. Dielectric strength members provide tensile strength while a specially formulated flame-retardant outer jacket allows the design to meet the requirements of the NFPA 262 flame test.

c) Indoor Loose Tube Fiber Cable

Corning's MIC 250 Cables utilize 250 µm color-coded optical fibers, surrounded by dielectric strength members with a flexible, flameretardant outer jacket. These cables are very good for creating multi-fiber preconnectorized assemblies as the 12-fiber groupings enable compatibility with multi-fiber connectors. The flexible, flame-retardant jacket and non-preferential bend axis allow installation in space-constrained areas and the all-dielectric cable construction requires no grounding or bonding. These cables come in 62.5 µm, 50 µm and single-mode versions, including Gigabit Ethernet and 10 Gigabit Ethernet versions.

d) Indoor Interconnect

Corning's Zipcord Riser Cables are designed for interconnect applications. Two 900 µm tight buffered fibers are surrounded by aramid yarn dielectric strength members and a flame-retardant jacket. This cable design offers mechanical durability and flame resistance that meets UL-1666 requirements for riser and general building applications. This cable also meets requirements of the National Electric Code (NEC) Article 770 and the cables are OFNR and CSA FT-4 listed.

Corning's Outdoor Fiber Cables for Enterprise Networks

a) Outdoor Loose Tube

Corning's ALTOS All-Dielectric Gel-Free Cables are designed for outdoor and limited indoor use for campus backbones in lashed aerial and duct installations. The loose tube gel-free design is waterblocked using water-swellable materials. The flexible buffer tubes can be routed in closures and the SZ-stranded, loose tube design isolates fibers from installation and environmental rigors while allowing midspan access.

The all-dielectric cable construction requires no bonding or grounding and these cables have a medium-density polyethylene jacket that is rugged, durable and easy to strip. A variety of fiber types are available including 62.5 µm, 50 µm, single-mode and hybrid versions, as well as fibers with Gigabit Ethernet and 10 Gigabit Ethernet performance.

b) Outdoor Single Tube

Corning's SST-Drop Dielectric Cables offer installation of standard ALTOS Cables in a single-tube design. The dielectric version doesn't require bonding and grounding. The cables are RDUP listed (formerly RUS) and offer very good crush resistance.

c) Outdoor Ribbon

Corning Cable Systems SST-Ribbon Gel-Free Cables introduces high-fiber-count gel-free cables. It provides up to 432 fibers in a compact design, the coupling features ensure the ribbon stack and cable act as one unit, providing long-term reliability in aerial, duct and direct-buried applications. These features also minimize ribbon movement in situations where cable vibration may occur.

d) Outdoor Tight Buffered

Corning's tactical fiber optic cable is for routing in all environments or conditions between buildings and modular telecommunications gear for communications, data or video. Applications include military mobile communications (temporary or permanent communication systems), traffic and video control (optical feeds in rugged environments), broadcast video (temporary or permanent setups at events), and industrial or other harsh environments (extreme conditions such as abrasive or chemical atmospheres and high crush environments).

Corning Enterprise Fiber Optic Cable - Types and Applications

Colin Yao is the sales manager at Fiber Optics For Sale Co. and an expert on fiber optic technologies and products. Fiber Optics For Sale Co. stocks a large inventory of Corning ALTOS fiber cable and corning fiber optic cables. You can easily order them online. Check them out today!

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