Answer / sureshsinghbhandari

All the client server applications are 2 tier architectures.
and when Business Logic is stored in one Server, and all the clients are dumb terminals.

Here in these architecture, all the “Business Logic” is stored in clients and “Data” is stored in Servers. So if user request anything, business logic will b performed at client, and the data is retrieved from Server(DB Server). Here the problem is, if any business logic changes, then we
need to change the logic at each any every client. The best ex: is take a super market, i have branches in the city. At each branch i have clients, so business logic is stored in clients, but the actual data is store in servers.If assume i want to give some discount on some items, so i
need to change the business logic. For this i need to goto each branch and need to change the business logic at each client. This the disadvantage of Client/Server architecture.

So 3-tier architecture came into picture:
Here Business Logic is stored in one Server, and all the clients are dumb terminals. If user requests anything the request first sent to server, the server will bring the data from DB Sever and send it to clients. This is the flow for 3-tier architecture.
Assume for the above. Ex. if i want to give some discount, all my business logic is there in Server. So i need to change at one place, not at each client. This is the main advantage of 3-tier architecture.

Suppose you have production data copied into the test environment. What are the advantages and disadvantages?

1 Answers  

---

what is system testing?

7 Answers  

---

what is the diff between function and Sub function

3 Answers  

---

what is cross project reference what is entry and exit criteria for login page.

1 Answers  

---

What type of projects can include in Logistics Domain? and what is the type of domain for project which include Driving license renewal, Different type of title registration etc...

0 Answers  

---

What features of sqlserver is generally used in database testing

3 Answers   Mastek,

---

what is regression testing also known as ?

2 Answers  

---

is it possible tht some one can provide me reading material it would be higly appriciated my email id is svit00ef27@yahoo.com thankx in advance

2 Answers  

---

Tell me test cases for water bottle

9 Answers   ABC, Mphasis, TCS,

---

how do u make severity , suppose login page has been sucessfully passed and entered in 2nd page instead of 1st page. what is ur reaction .

11 Answers   Amdocs,

---

How can we test a web application meant for Dump and Deaf???

1 Answers   ACS,

---

Test case preparation time Vs Test case execution Time. Say for example if 500 Man hour takes to prepare test case then how long test case exexution will take?

0 Answers  

---