🏢 SAP R/3

 SAP R/3:

Systems, Applications, Products in data processing

R/3------ Real time 3 tier architecture

History:

SAP AG---- developed by 5 IBM employees in 1973----in woldoff (Germany)

SAP R/1(Finance)------1973

SAP R/2 (Mainframes)------1978

SAP R/3 (Client Server Technology)----1992

Systems:

These are basic resources for implementing a project

Examples: Servers, Hardware, Soft ware, Systems, Network, Database………etc

 

 Features of SAP:

1. Designed based on RDBMS

2. Designed based on R/3 Architecture

3. Database independent

4. Supports all types of industry specific solutions

5. International package available in 40 languages

6. It can be customized using ABAP language

7. Best ERP for FI, SD, MM, PP, HR, CR

8. Supports Client-Server Technology

9. Highly versatile (Operating System independent)

10. Supports web based application softwares 

 

ABAP Consultant (or) Abapar (or) Technical Consultant:

Roles:

1. Creates Technical Documents (brief logic)

2. Creates an Object from scratch implementation project

3. Modifies existing objects to support project

 

BASIS Consultant:

Roles:

1. Installation

2. Maintenance

3. Configuration

4. Customization (or) Administration

Applications:

•  These are collection of Screens
•  Each Screen is a collection of Fields

 

Use---Applications are used by Clients (or) End Users

Create---Applications are created by Abapars (or) Technical Consultant (or) ABAP Consultant

Customized Data----Applications data customized by Functional Consultant

Functional Consultant:

Roles:

1. Customization of Data

2. Getting requirements from Clients

3. Preparing Functional Documents

4. Preparing End User Manuals (or) Snapshots

5. Providing end user Training

Products:

• These are called Objects 

• These are created by Programming

 

SAP R/3 Architecture

Services in R/3 Architecture:

1. Dialog Service:

It provides interface between Presentation Server & Application Server

2. Update Service:

It provides interface between Application Server & Database Server

3. Spool Service:

It provides interface between SAP R/3 & External Systems (Printers, Fax….etc)

4. Background Service:

It is for background scheduling

Note: In real time once report is created, then it is scheduled in background by BASIS Consultants, they will set time & event related to it

5. En-queue Service:

It maintains data integrity (locking mechanism) in SAP

6. Message Service:

It is for Error & Exception handling

7. Gateway Service:

It is for distributed environment

Note: The above 7 services are part of Application Server

8. SAP GUI Front End Service:

It handles all SAP GUI Operations in SAP Presentation Server

9. Database Service:

It Maintains & Manages data operations in Database Server

Softwares in SAP:

1. Production Software

2. IDES Software (or) Training Software

1. Production Software:

1. It is Real time
2. Every company should purchase this software from SAP
3. Here you will find only live data.
4.  Clients (End Users) are works with Production Software

2. IDES Software:

1. International Demonstration & Education System Software
2. It is also known as Training Software
3. Here you can find data for practice & examples for practice