I had this conversation with my good friend, Ashish, who works in a steel manufacturing company and wants to take a grip at some basic concepts of IT.
Ashish: hi! Aritro do you know some basic concepts of IT?
me: I think i may be able to help you, what are your requirements?
Ashish: I wanted to know something about system architecture.
me: Sure, this is what we have learned in the MIS class this week. Well, basically all system architectures are either single tiered or multi tiered. In a single tiered system architecture both the application and the data are stored in the same computer, much like our PCs and laptops. They contain both data as well as application to run & use the data on a single machine but they are separate entities.
For example, the movie in your hard disk is data & VLC player is an application, when both the things are in a single system its single tier architecture.
Ashish : OK, now what is two tier system architechture.
me : Two tier system architecture also called client server architecture where a single data server stores all the information & many systems with application loaded in them are connected to this server through LAN.
The numerous systems connected to the main data server called client machines use the data from server & are connected through each other by TCP/IP protocol.
Ashish : Is there any other kind of system architecture?
me: Yes, there is three tier architecture where there is a single server with all the data and business application. This server is connected to the client systems which have a user interface loaded in them. these client systems use the server data ,execute it through application stored in the server and send it through WAN to client systems where these can be accessed through user interface.
Ashish : Why is internet not used in place of LAN?
me : Exactly, since WAN wires over large distance is not feasible in this era of globalization, now days the servers are compact & can store large amounts of data, business applications and are also armed with a web browser. Thus the client system can get everything over the internet just through a web browser.This type of architecture is called multi tier architecture.
This concept can be easily understood through the example of online shopping through internet.
Ashish : What kind of software are used in servers?
me : Now days most organizations use the ERP system to store & manage data. Like in your office after every shift you have to enter in the ERP system the number of heats produced, the hot metal consumed & all other information. In turn you get systematically arranged data which also calculates the production target for the next month.
The software used can either be SAP, Oracle etc. The severs use integrated database like Oracle,SQL servers etc to store data & applications like Oracle apps,SAP. The clients can access the information in server through WAN or through internet, for which some firewall has to be used to prevent hacking.
Ashish : Thanks a ton! The information was really helpful & simple.
me : No problem, if you have any more doubts feel free to contact me.
Ashish : Definitely, bye see you soon.
me : bye.
Ashish: hi! Aritro do you know some basic concepts of IT?
me: I think i may be able to help you, what are your requirements?
Ashish: I wanted to know something about system architecture.
me: Sure, this is what we have learned in the MIS class this week. Well, basically all system architectures are either single tiered or multi tiered. In a single tiered system architecture both the application and the data are stored in the same computer, much like our PCs and laptops. They contain both data as well as application to run & use the data on a single machine but they are separate entities.
For example, the movie in your hard disk is data & VLC player is an application, when both the things are in a single system its single tier architecture.
Ashish : OK, now what is two tier system architechture.
me : Two tier system architecture also called client server architecture where a single data server stores all the information & many systems with application loaded in them are connected to this server through LAN.
The numerous systems connected to the main data server called client machines use the data from server & are connected through each other by TCP/IP protocol.
Ashish : Is there any other kind of system architecture?
me: Yes, there is three tier architecture where there is a single server with all the data and business application. This server is connected to the client systems which have a user interface loaded in them. these client systems use the server data ,execute it through application stored in the server and send it through WAN to client systems where these can be accessed through user interface.
Ashish : Why is internet not used in place of LAN?
me : Exactly, since WAN wires over large distance is not feasible in this era of globalization, now days the servers are compact & can store large amounts of data, business applications and are also armed with a web browser. Thus the client system can get everything over the internet just through a web browser.This type of architecture is called multi tier architecture.
This concept can be easily understood through the example of online shopping through internet.
Ashish : What kind of software are used in servers?
me : Now days most organizations use the ERP system to store & manage data. Like in your office after every shift you have to enter in the ERP system the number of heats produced, the hot metal consumed & all other information. In turn you get systematically arranged data which also calculates the production target for the next month.
The software used can either be SAP, Oracle etc. The severs use integrated database like Oracle,SQL servers etc to store data & applications like Oracle apps,SAP. The clients can access the information in server through WAN or through internet, for which some firewall has to be used to prevent hacking.
Ashish : Thanks a ton! The information was really helpful & simple.
me : No problem, if you have any more doubts feel free to contact me.
Ashish : Definitely, bye see you soon.
me : bye.
OK, good
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