Presentation, Application ,Database Servers In SAP R/3

Application Server-: 

The application layer of an R/3 System is made up of the 

Application servers and the message server. Application 

Server is placed between the presentation server and database server. 

Application programs in an R/3 System are run on application servers. 

The application servers communicate with the presentation Components, 

the database using the message server. All the data are stored in a 

Centralized server. This server is called database server. The message 

server is used to communicate between different servers.

Presentation server in sap-:

Presentation server is system with GUI means all the output you can seen 

their and all the input is inserted by the presentation server. it collect 

the requirements from end users and dispatcher dispatch it to the data base 

layer for the response of that, where data base server is the main server 

which consist all the data information and tables, application server  placed 

between both, presentation and Database server and it provides interfacing 

between the database & presentation server. But now a new concept is introduced 

that is netweaver concept, in which a new layer is introduced that is internet 

layer. it consist every server different so it is called R/3 system earlier single

 System consist all the servers that is called R/1.

Sap Interview Questions - ERP

Q-: What is ERP
Ans-:
ERP is a package with the techniques and concepts for the merged management of business as a whole, for effective use of  resources, for better the efficiency of an enterprise. In begining ERP was targeted for manufacturing industry mainly for planning and managing  business such as  production and financial market, human resources,accounts etc. Sap is itself ERP.


Q-: Different types of ERP ?
Ans-

1.  SAP, BAAN, JD Edwards, Oracle financial, Siebel, PeopleSoft. mostly companies try to implement the sap in their organization because of number of advantages aver other ERP packages.

Q-: Why do you usually choose to implement SAP? 

Ans- There are number of technical reasons numbers of companies are planning to implement SAP. It’s help organize and command all the data, and functions from main server and provides  highly secure data handling, min data redundancy, max data consistency. so it is adopted by mostly companies such as honda, oil mills, and many more.

Q-:What do you mean by IDES?

Ans - International Demonstration and Education System. Application provided for faster learning and implementation.

Q-: Define SAP R/3?

Ans - A third generation set of highly integrated software modules that performs common business function based on multinational leading practice. it is three tier, includes presentation server, application server, database server seprately.