Hures Company Case Study Essay Sample

What is mainframe computing machine and dense terminus?
Mainframe computing machine is the signifier of calculating in which a individual centralize computing machine performs the processing for multiple computing machine ( crfonline. org ) . Dumb terminus is a show proctor that has no processing capablenesss attached to mainframe computing machine. Dumb terminus is merely an end product device that accepts informations from mainframe computing machine ( webopedia. com ) . Here. as Hures Company implemented its first information system in 1987 buying mainframe computing machine that served dense terminuss we can easy expect that the system has embedded database system which can non run in single procedure. As the system runs merely in one computing machine it is 1-tier architecture.

Figure: Mainframe and dense terminuss.
In 1999 to get by with alterations in both concern and Information System environment and besides to suit Y2K demands. the Hures Company ported applications to client/server system which contributed big to efficiency and net income. What is client/server application?

Client/server application is a piece of package in client and makes petitions to a distant waiter via web. Client/server application is written in high-ranking ocular scheduling linguistic communications where user interfaces and most of the concern logics reside in client application. One of the illustrations of client/server applications is database application that makes database questions to a distant cardinal database waiter. This type of application grew in popularity many old ages ago as personal computing machines became common option to older mainframe computing machines ( compnetwroking. about. com ) .

Figure: Client/server application system
Current state of affairs:
The company continued to turn quickly of all time since but has noticed that the web has jobs such as trouble in scaling the waiters to react to the increased burden in the distributed environment and a continual demand for progressively powerful desktop machines. 1. Make you believe the jobs faced by Hures. both past and present. are alone? Why or why non? The job faced by Hures. both past and present. are alone in term of monetary value. infinite and operation because mainframe system requires intense resources ingestion. intense human attending and intense busying infinite in comparing to client/server application system. Furthermore. the mainframe system is non dependable if excessively many users are logged on or if the web is out as the terminuss have no its ain computational power. But in client/server system. terminuss are intelligent. However. the jobs are non alone in term of scalability. meeting future demands. interoperability. and maintainability. In mainframe clip. the system is non scalable in distributed environment because of embedded system and dense terminuss. In client/server application system every bit good. the system is non scalable as interfaces and most of the concern logics are resided in client application.

The company could spread out the system in both state of affairs. but it costs batch in upgrading all the clients and upgrading the server side with regard to clients. In Hures Company. both mainframe and client/server systems are non flexible plenty to run into future demands. The instance survey implies the turning concern tendency in the company but the systems are non good designed to provide future demands. The company can non set the system as per the manner the concern expands. The both system can non undertake the alterations brought about by alteration in internal and external environment. Maintainability is really difficult in both embedded mainframe system and client/server application system. Whole the system need to be reviewed in order to modify to rectify mistakes. better public presentation. or adapt to alter environment. As there is no middleware in both the mainframe and client-server system. there is no outlook of interoperability.

2. Suggest alternate architectures that could be used to get the better of the jobs faced by Hures’ current Client/Server engineering. The alternate architecture suggested to Hures Company to get the better of all jobs is three-tier architecture. Three-tier client/server architecture

Three-tier architecture is the component-oriented attack of architectural deployment manner that describes the separation of functionality into beds. Each section is a grade and is located in different physical computing machine. In this architecture. the package is divided into 3 different grades: presentation grade. logic tier and informations grade. Each grade is developed and maintained independently. There is really low mutuality between beds because merely layer immediate to other can entree its public constituents.

Figures: Three-tier client/server architecture ( Wikipedia. com )

Presentation grade: Presentation grade provides application’s user interface to users. It involves Graphical User Interface in smart client interaction while web based engineering in browser-based engineering. It is besides called as client. Logic bed: This bed encapsulates concern logic ( concern regulations. informations proof ) . informations entree logic etc. It controls the functionality of application by elaborate processing. It is besides known as in-between bed. Business logic resides sometimes both in client side and server side and sometimes in either client side or server side. But middleware like MOM and OOM aid in conversation between client and waiter. Data bed: Data bed consists of database waiter. Here information is stored and retrieved. Why three-tier architecture is suggested as alternate architecture for Hures Company? The chief job of Hures Company is trouble in scaling the waiters to react to the increased burden in the distributed environment and a continual demand for progressively powerful desktop machines because of rapid growing of the company. So. if the Hures Company introduces Three-tier client-server architecture the company in inquiry will be benefited from scalability. maintainability. flexibleness. interoperability. and serviceability.

Scalability: Because each grade is independent of the other grades. scaling either server side or client side is reasonably straightforward. The Hures Company can scale its system as per the future demand. Maintainability: As there is really less mutuality between beds. the Hures Company can update. upgrade or convey about alterations harmonizing to the demand without impacting the system as a whole. Flexibility: Because each bed can be scaled and managed. flexibleness can be increased. Interoperability: Hures Company can be benefited of Interoperability in three-tier architecture because back-end procedures like complex calculation and concern logics are handled by application waiter without the presence of Human being. On top of that there is automatic communicating between immediate beds due to which users do non necessitate to understand the complex communications. Middleware helps for interoperability.

Serviceability: This architecture allows users to bespeak. entree and present informations through familiar desktop interfaces. 3. One of the suggestions proposed by Hures’ IS section is the usage of intranet web engineering. Analyze the pros and cons of such an thought. Intranet web Technology: A web based on cyberspace protocols ( TCP/IP Protocols ) belonging to an organisation. normally a corporation. accessible merely member. employee. or other mandates is called Intranet engineering ( webopedia. com ) . Intranet sometimes besides called as organization’s internal web site. Intranet engineering is by and large based on three-tier architecture ( en. kioskea. cyberspace ) .

Professionals of Intranet web engineering: An intranet web engineering is a private and internal local web engineering that uses typical cyberspace protocols. As intranet is closed private web unfastened merely to selected groups. it more unafraid to outside universe. It uses the same cyberspace package due to which we don’t need to deploy wholly new and unseasoned package. Intranet is a universe broad web site intranet utilizing

4. Make you believe the popularity of intranet package and the Internet airs menaces to traditional Client/Server systems?

Yes. the popularity of intranet package and the Internet airs menaces to traditional client/server system. Intranet: Harmonizing to nut. kioskea. cyberspace. an intranet is a set of cyberspace inside a local web. It involves the usage of client/server criterions ( TCP/IP ) protocols and net waiter protocol ( HTTP protocol ) to make information system inside an organisation or endeavor. Internet: Internet sometimes simple called Internet is a world-wide system of computing machine networks-a web of webs in which a user in any computing machine can acquire information from any computing machine in the universe if former has permission ( searchwindevelopment. techtarget. com ) . It is web between Organizations. The engineering uses a set of protocol called TCP/IP protocol ( acronym for Transmission Control Protocol/Internet protocol. )

How intranet and cyberspace cause menaces to traditional client/server architecture? Traditional Client/Server architecture is someway out-of-date architecture in this beforehand technological epoch because of defect in:

•Scalability
•Maintainability
•Flexibility
•Interoperability and
•Usability
The emerging architecture called three-tier architecture far surpasses traditional Client/Server architecture because later architecture overcomes all the jobs in former architecture. Harmonizing to nut. kioskea. cyberspace. an intranet and cyberspace are by and large based on three-tier architecture. comprising: •Client ( by and large web browsers ) ;

•One or several application waiter ( middleware ) and
•A database waiter.
The web makes possible to interchange questions and the responses between clients and waiters. Both intranet and cyberspace are based on same engineering but the difference is intranet is secured from outside universe by firewall while cyberspace is unfastened to outside universe. As both intranet and cyberspace are based on three-tier architecture. the systems are scalable. flexible. maintainable. useable and cost effectual. The constituents can be managed and enhanced easy without impacting the other constituents. The systems can be scaled harmonizing to the alteration in internal and external environment easy because of less dependence among package architectures. Furthermore. this architecture increases public presentations of web and throughput every bit good. On the other manus. in traditional client/server architecture as concern logic is resided in client side. it is really uneffective. expensive to scale harmonizing to the demand of Company. Decision