ABAP/4 Defining Data

1
ABAP/4Defining Data

• Defining Data
• Data statement
• Parameters statement
• Tables statement
• Constants statement
• Data statement to define field strings
• User defined Data types
• Type-pools

2
ABAP/4Defining Data

• Defining Variables
• Data statement
• data f1(2) type c.
• data f2 like f1.
• data max_value type I value 100,
• cur_date type d
• value 19990201
• Parameters statement
• Special type of variable that will accept input
  from user.
• Parameters p1(2) type c.
• Parameters cur_date type d default 19980211
  obligatory.

3
ABAP/4Defining Data

• Data types
• Character and Numeric
• Character Data types

4
ABAP/4Defining Data

• Data types
• Character and Numeric
• Numeric Data types
• Use integers for simple computations, counters,
  indexes etc
• Floating point for very large values or many
  decimal places.

5
ABAP/4Defining Data

• Defining constants
• Identical to a variable except that its value
  cannot be changed.
• Constants c1(2) type c value AA.
• Constants c2 like c1 value BB
• Defining Field strings
• Type of variable, equivalent structure in DDIC
  but is defined within ABAP program
• Has global and local visibility.
• Data begin of totals,
• region(7) value unknown,
• debits(15) type p,
• count type I,
• end of totals.
• Totals-debits 100.
• Totals-counts 10.

6
ABAP/4Defining Data

• Using Tables statement to define a field string.
• Has global and external visibility no matter
  where it is placed in the program.
• Tables ztxlfa1.
• Ztxlfa1-name1 Bugsy.
• Ztxlfa1-land1 US.
• User defined types
• Types dollars(16) type p
  decimals 2.
• Data petty_cash type dollars,
• Pay_outs type dollars,
• lump_sums type dollars.

7
ABAP/4Defining Data

• Using Type groups (Type-pool) to define types or
  constants.
• Data Dictionary object that contains one or more
  types or constants statements.
• Multiple programs can share a type group.