ABAP

Question 1

___________ allows grouping of similar classes in a general-to-specific hierarchy.

Answer 1

Inheritance

Often described as a “is a” relationship

Question 2

Inheritance promotes “programming by difference” which means ___.

Answer 2

the subclass only defines those things that are different

Question 3

To use inheritance, in the child class, add _____ to the first line of the class definition.

Answer 3

INHERITING FROM parent

Question 4

Can the inheriting class delete anything from the parent?

Answer 4

No

But the child class can redefine method implementation.

The method is noted as a REDEFINITION

METHODS display_doc REDEFINITION

Question 5

To call a method of the parent (such as when you want to call the original method as part of a method’s redefinition, use____

Answer 5

SUPER->

Question 6

TRUE/FALSE

A subclass may use the superclass constructor as is, or the subclass may create a new constructor with a new interface.

Answer 6

TRUE

Question 7

The constructor is the only method in ABAP objects that is ___, meaning that two active methods share the same name.

Answer 7

overloaded

Question 8

What’s the code for the subclass constructor if it wishes to call the superclass constructor?

Answer 8

super->construtor ( params ).

Question 9

TRUE/FALSE

A private component (attribute or method) of a superclass cannot be referenced by the subclass.

Answer 9

TRUE

Question 10

In the definition of an object, the sections must appear in order. What’s the order?

Answer 10

PUBLIC SECTION
PROTECTED SECTION
PRIVATE SECTION

Question 11

Which attributes and methods are visible to its children?

Answer 11

PUBLIC and PROTECTED

Question 12

What are 5 ways of fitting ERP to needs of a company?

Answer 12

1. Personalization: setting default values for fields, hiding fields, creating menu paths, etc. Typically done by end user.
2. Configuration: using existing controls within the software to conform its functionality to the desired behavior.
3. Modification: changing the core software to reflect variant customer execution. Also called customization. NOT RECOMMENDED
4. Enhancement: adding to established system elements (without changing standard SAP code).
5. Customer Development: creating unique elements within the system environment (without changing standard SAP code). *Add on top of SAP - standalone

Some sources use the terms Configuration and Customization synonymously. We properly consider them distinct terms where their definition is as reflected above.

Question 13

Which ERP method may be considered the best?

Worst?

Answer 13

Customer Development

Modification

Question 14

Typical landscape involves multiple systems. Name 4

Answer 14

development (DEV)
testing (QAS)
production (PROD)
training (TRN).

Question 15

Each statement begins with a _______

Answer 15

keyword

Question 16

Each statement ends with a ________

Answer 16

period

Question 17

SE11

Answer 17

Data dictionary / Global repo

Question 18

Open SQL

Answer 18

ABAP’s version of SQL

Question 19

Dictionary Component: Data Types

Answer 19

Data Element
Structure
Table Types (internal tables)

Question 20

Direct typed

Answer 20

Table fields typed without reference to a data element

Question 21

Transparent table

Answer 21

Is when a table is defined in the ABAP Dictionary. When activated, is created in the underlying DBMS

• The DBMS-specific table has the same name as the ABAP Dictionary transparent table name.
• The field types in the DBMS-specific table are converted to whatever the appropriate data type definition is in the DBMS.
• Underlying elements of the table (such as field order, etc.) may be changed as necessary.

Question 22

4 basic Open SQL commands

Answer 22

SELECT
UPDATE
INSERT
DELETE

Question 23

To Override MANDT field, add the ____ clause to the command

Answer 23

CLIENT SPECIFIED

Allows a client number to be specified, for example in a WHERE clause in a query.
If CLIENT SPECIFIED is used but no client-limiting code is included, data for all clients is returned.

Question 24

SAP LUW (Logical Unit of Work)

Answer 24

set of logical changes to a database that all belong together.
A LUW is done in accordance with the “all or nothing” principle.
If entire sequence cannot be done, the operation is rolled back.

Question 25

MESSAGE

Answer 25

Simulates error handling

Question 26

COMMIT WORK

Answer 26

Will explicitly trigger a database commit.

In some situations, the commit is triggered implicitly by the program logic moving to other logical operations.

Question 27

Inheritance

Answer 27

one class shares structure and behavior with another

Question 28

Polymorphism

Answer 28

different (but related) objects have the same communication interface

Question 29

Events

Answer 29

Triggered by an object

Question 30

Object

Answer 30

instantiation of a class, storing actual data and/or allowing method execution

Question 31

Class

Answer 31

definition of the structure and functionality of an object-to-be. Defines data the object will contain (attributes) and related functionality (methods).

Question 32

ABAP class syntax divides the class into 2 sections:

Answer 32

definition (containing attribute declarations and method interface definitions)

implementation (method code)

Question 33

Functional method

Answer 33

A method with a return value is called a functional method. Unlike other methods, functional methods can be called within other statements such as IF, CASE, and WHILE

Question 34

How do you self-reference within a method?

Answer 34

me->attributename

Question 35

What’s the code to import multiple parameters into a method?

Answer 35

object->method( par1 = data1 par2 = data2 ).

If there are parameters of types other than importing, the type of parameter passing must be listed.
object->method( EXPORTING p1 = d1 p2 = d2 IMPORTING par3 = data3 CHANGING par4 = data4 ).

Functional methods (those that return a value)
The value to be returned by the method call be listed in the interface using the parameter passing type RECEIVING.
Object->method( EXPORTING p1 = d1              RECEIVING par4 = data4 ).

The value to be returned may be captured through assignment (more typical).
data4 = object->method( d1 ).

Question 36

Event blocks

Answer 36

Called by runtime environment when related event has been triggered through natural program flow of control or when triggered by a user action

Our initial programs—one block—so no need to declare event blocks.

Question 37

Examples of Program event blocks

Answer 37

LOAD-OF-PROGRAM (called at initial program setup)
START-OF-SELECTION (beginning of main processing)
Example use: PARAMETERS triggered at beginning of main processing. If want to set a default value for field based on processing (calculation, data retrieval), must do this before START-OF-SELECTION.