Friday, 20 July 2012

System and network Architecture

Conversation between 2 friends on systems architecture.

Vivek: Hey Vaman. How are you doing?

Vaman: I'm good. Thanks.

Vivek : How is everything?

Vaman : All good. How about you. How are your IT classes going?

Vivek :  Ah great. Some interesting things discussed in class.

Vaman : Really. What was it all about.

Vivek : Hmmmm ... let me discuss in a nutshell. We learnt about computer system architecture. These are primarily the ways in which systems can be set up in a network, depending on the type of operations.

The Single Tier - A single tier architecture are the ones where the data and the application lie on the same machine. e.g. the applications that we use on a daily basis - word, excel, power-point etc.

The Two Tier - This has all the data stored in the central server. Small applications are installed on the local machines, which access the data stored in the central server using the TCP/IP protocols. e.g. Oracle, MY SQL, DB2.

The Three Tier - In this format the data as well as the application is stored in centrally for better management. Only the user interface is required at the local systems. This cuts down on the amount of data thats required to be transferred, freeing a lot of usable bandwidth.

and finally the Multi - Tier - This is a big advantage over the remaining. This kind requires the web functionality to be enabled. A web server needs to be hosted. Only with the use of "http:\\" an user can have access to the application he/ she wants to and make the necessary updates and inputs.

In this format the data, the application and the web application can either be maintained on individual servers  or they can all be hosted together on the same server. Cost as well as bandwidth are both saved to a great extent. Using this format a user can login from any corner of the globe to work provided the user has an internet access.



There are also 2 bits that we have learnt alongside. The RDBMS and ERP.

The RDBMS type of management is best useful to prevent any data duplication. At the same time the data can be backed up and restored as per requirement easily and user rights can be assigned.

ERP on the other hand has to do with the Enterprise Resource Planning systems integrate internal and external management information across an entire organization, embracing domains like finance, accounting, manufacturing, sales and service, the CRM etc. ERP systems automate this activity with an integrated software application. The purpose of ERP is to facilitate the flow of information between all business functions inside the boundaries of the organization and manage the connections to outside stakeholders.

Vaman : Wao .. thats quite an insight. Moreover, the topic seems to be very interesting, considering the fact we never think of the ways the actual functionality takes place behind all the offices where these are actually implemented.

Vivek: Yeah .. thats so true.

Vaman: Ok friend. let me know more about the subject when you have furthur information.

Vivek: Sure ... bye. Take care.






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