SYSTEM ARCHITECTURE 

Introduction:-

Ajay: He is my friend just passed his 12th and seeking admission in engineering(specially intersted in IT). He has sound knowledge of IT as it was one of his vocational subject in 12th.He read one article about System architecture and then asked me about it. and our convesration went as followed after formal introduction:

Ajay: What is system engineering and system architecture????

Me:Its simple.Do you know in progarmming language, what is data structure and algorithms???

Ajay:Yes, data structure is brief of what is to be processed and algorithms is supportive method or process of how this data is to be processed. right??

Me: Correct. similarly in system engineering(science comprises of developement of complex arificial systems), system consist of database(what is to be processed) and applications(how to process). and these 2 entities are always seperated in any system. and designing  these enitities efficiently for perticular project is called as system architecture(SA). 

Ajay:  Ok. now picture is getting somewhat clear.do you have some more information ????

Me:Yes, of course.There are several types of SA depending upon complexity and several other factors:

1)Single tier

2)Two tier

3)Three tier

and 4) Multi tier

in all this tiers (except single tier)basic thing is data is stored in one system called as servers while applications are stored either at client end or at main data center. and these two are integrated with help of internet,WAN,LAN etc. and while integration main challange is data security.As you must have heard about hackers so companies now a days use security tools such as firewall which protects data theft.

Ajay:Wow! that sound interesting. now a days i heard about ERP and DBMS. what are they would you please explain me in short?? and is it having any relation with SA??

Me: Yes, they are related as to SA. these are the two hot topics in IT world now, which eases companies handling data in efficient and structured way.where DBMS is related to database management while ERP is related to applications containing different modules. 

Ajay: I think these things are interesting.

Me: Ya definately these things are now emerging slowly.hope above information will help you to choose your engineering stream.

Ajay : Yes, sure, thanks a lot. bye

Me: Bye and best of luck.