Me : Hi where are you
going.
Co passenger : I am going to Kolkata, I
am a small businessman I give IT infrastructure solutions to small
firms.
Me : Then it might be
interesting job to give customized solution to various firms
depending on their nature of work and requirements.
Co passenger: That is the main issue ,
many a times my client are not satisfied with the solutions I have
provided because I don't know about computer architecture , so my
business is not doing good.
Me : Don't get me wrong
but I think this is the easiest thing in world to learn. I'll explain
you.
First comes the Two Tier : Client
Server Architecture where Data is stored in the Server and
Applications stored on individual machines and Connects clients
machines to server using TCP / IP protocols.
Next comes Three Tier Architecture
where Application is partitioned and Presentation Logic kept
locally and same is case with Multi-Tier Architecture where No need
for specialist software at each client location but here we have a
constraint that Business Application should be “web enabled”.
Co passenger : Yes this is really easy.
Me : Just hold on , now
it will get more complex.
Next comes the Two Tier : Multiple
Applications ,this a type of architecture is useful when Multiple
applications and have specific requirements and distinct data . Here
application is distributed across more than one machine . Here data
management can be very complex. So as to maintain the complexity if
data even we can go for integrated database which also
avoid the duplicate data . ERP is next advances
approach on this way because it gives Tighter integration across
all functional areas;No separate activity
required to synchronize data;Can be purchase as a single
package from established vendors and Faster to implement and Easier
to manage and maintain.
Co passenger: I think this is best
system which caters to all requirements.
Me : Yes this is good
system , but is some applications we need special data and special
treatment to data in this case we can add that module to
existing integrated ERP module.
Co passenger: But implementing this
system will need dedicated WAN so will it be costly ?
Me : Yes this whole
system can be kept on WAN but which can be costly so only big corporate
houses use this system.
Co passenger: Can't we use the internet
for this ? If we can put it on internet so many people will be able
to access it .
Me : Yes you are right
if we put it on internet it can co accessed by so many people but
there are threats from hakkers and there is question of data integrity. So a firewall needed to provide secured access and
protect the data integrity.
Co passenger: Thanks friend now I
understood the computer architecture , now it will be vasy for me
to provide my clients with best architecture matching their needs.
Me : You are always
welcome. Good bye.....
Co passenger:Good bye.....
