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e-export apps. uses MS SQL Server toolkit and database for the ERP. For the Net Applications ASP.NET and related technologies are used. e-export apps. is based on three-tier architecture. This is different from the traditional client/server architecture in the way that the application instead of residing on the client now resides on the middle-tier i.e. the Application Server. This enables a user to access the application from the client-end, using just a web browser. The three tiers of e-export architectures are as follows: |
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| Presentation tier (or user interface) |
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| This tier interfaces with the user and consists of hardware such as a PC or workstation and a web browser. This may consist of any number of client machines. |
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| Application logic /Business Logic tier |
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| This tier provides functionality to the end users and contains the business logic (application). It provides the bridge between the first and the third tiers. Depending upon the number of hits and the number of users, any number of application servers can be put in this tier. |
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| Data tier |
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| This tier includes the database that contains all the data of the organization and this is encapsulated from the end users. Any number of database servers can be put in this tier, depending on the volume of transactions and the amount of data.This three-tier architecture can work on the Intranet as well as over the Internet. A typical diagrammatic representation of the three-tier architecture of e-export apps is as follows: |
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| The various software components at the three tiers are as follows: |
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| Client Tier |
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Operating System (Windows 95/98/2000/Xp) |
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Java enabled web browser (Internet Explorer 5.0/higher) |
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| Database Tier |
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NOS platform (like Windows NT 4.0/2000/2003) |
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MS SQL Server 2000 / 2005 |
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| Advantages of e-export apps three-tier architecture |
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| Thin clients |
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| The application/business logic resides on the middle tier and thin clients can be used which just have a web browser installed on it. So whenever new client machines are to be added the incremental investments are very low. |
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| Enabling database migration |
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| Database restructuring, upgrades migration or other changes can be performed without substantially affecting the client programs. |
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| Front-end modifications |
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| New front-end clients can be introduced or old ones removed without any need to modify the database or provide new access mechanisms. |
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| Reduced database loading |
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| The database machine benefits from fewer connections. Moreover, there is reduction in the potential for conflict on any hot spots in the data. |
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| Easy Interfacing |
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| Connectivity to other systems/applications is easily possible since the entire business logic resides on a central machine. |
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| Easy Scalability |
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| Scalability is much easier in 3-tier architecture. This means to accommodate more client machines in future, we can just increase the number of application servers, instead of replacing the entire server with a higher configuration server. |
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| Platform Independence |
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| The client machines can be on different platforms. So it is not required to have a platform specific version of software at every client. |
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| Ease of Implementation of customizations |
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| The client machines can be on different platforms. So it is not required to have a platform specific version of software at every client. |
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| Easy Upgradeability |
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| It also allows easier up gradations to newer versions of the Product |
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| Technical Strength |
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| e-export apps |
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| Being based on three-tier architecture, enables resource intensive components to run on Middle tier, thereby moving bulk of the processing load away from the client. MS SQL Server Application server has built-in components that deliver high degree of scalability and include balancing, logging, automatic failure recovery, security, directory, and transaction components. The ERP based on MS SQL Server is highly scalable and robust to handle large number of client requests concurrently. |
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| e-export apps. Features |
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| Multi User (V-SAT, DIAL- UP, VPN, NETWORKING) |
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| Multi Location |
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| On Line System |
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| Enormous Flexibility |
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| Extensive Data Handling Capacity |
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| Graphic User Interfaces |
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| Fastest Possible Printing Capacity |
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| Flexible Report |
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| Proven Performance |
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| Cost Effective |
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| Multiple Financial Year |
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| Uses most powerful & widely used RDBMS |
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