Internal Tables in ABAP, why we need it.

1. Internal Tables
Presented By:-
Deep Upadhyaya

2. What is an Internal Table ?
Why do we need it?
Emp_ID Emp_Name JOB Salary
023 Ramesh Manager 40,000
024 Suresh Analyst 15,000
029 Kamal Manager 40,000
030 Bindol Analyst 85,000
Emp_ID Emp_Name JOB Salary

3. •Temporary Table
•Is used as buffer
•Processing the
data dynamically.
•Exists only during
the run-time.
•Created with a
structure

4. What is a structure for an
internal table?

5. Structure :
Emp_ID – 3 digit number
Emp_Name - 20 Characters(Alphabets)
JOB- 10 Characters (Alphabets)
Salary – 5/6 digit number
Emp_ID Emp_Name JOB Salary

6. Why do we need Internal tables?

7. •To obtain data from a fixed
structure.
•Hitting database less .
•Storing results.
Emp_ID Emp_Name JOB Salary
023 Ramesh Manager 40,000
024 Suresh Analyst 15,000
Emp_ID Emp_Name JOB Salary
023 Ramesh Manager 40,000
024 Suresh Analyst 15,000
025 Niresh Manager 60,000
026 Puram Analyst 35,000
027 Dharam Manager 70,000
028 Nuresh Analyst 45,000
029 Kamal Manager 40,000
030 Bindol Analyst 85,000

8. Work Area
Cupboard
(Tools)

9. Work Area
Cupboard
(Tools)

10. •Process large
volumes of data.
•Changing
• Inserting
•Deleteting
Emp_ID Emp_Nam
e
JOB Salary
023 Ramesh Manager 40,000
024 Suresh Analyst 15,000
025 Niresh Manager 60,000
026 Puram Analyst 35,000
027 Dharam Manager 70,000
028 Nuresh Analyst 45,000
029 Kamal Manager 40,000
030 Bindol Analyst 85,000
Emp_ID Emp_Name JOB Salary
023 Ramesh Manager 40,000
Emp_ID Emp_Name JOB Salary
023 Ramesh Senr Mngr. 60,000

11. Can we inset data directly
to an internal table?

12. Work Area.
•Same as Internal table, a single row
•Used to
process
the data
•One line
at a time

13. •with HEADER line
•without HEADER line.
Types

14. With HEADER line
•Automatic creation of work area
•Table and work area has same
name
•Not recommended.
•Creates confusion . Emp_ID Emp_Name JOB Salary
023 Ramesh Manager 40,000
024 Suresh Analyst 15,000
029 Kamal Manager 40,000
030 Bindol Analyst 85,000
Emp_ID Emp_Name JOB Salary
TABLE_EMP
TABLE_EMP

15. •Manual creation of
work area
•Table and work
area has different
name
Emp_ID Emp_Name JOB Salary
023 Ramesh Manager 40,000
024 Suresh Analyst 15,000
029 Kamal Manager 40,000
030 Bindol Analyst 85,000
Emp_ID Emp_Name JOB Salary
TABLE_EMP
WORK_AREA_EMP
Without HEADER line
Recommended approach

16. Any Questions???