ABAP---Q&A --2 - Page 4

**Spoorthi** · 25-04-06, 12:40 AM

CAN YOU DEFINE A FIELD WITH OUT A DATA ELEMENT?

Yes. If you want to specify no data element and therefore no
domain for a field, you can enter data type and field length and a short text
directly in the table maintenance.

WHAT ARE NULL VALUES?

If the value of a field in a table is undefined or unknown,
it is called a null value.

WHAT IS THE DIFERENCE BETWEEN A STRUCTURE AND A TABLE?

Structures are constructed the almost the same way as
tables, the only difference using that no database table is generated from
them.

**Spoorthi** · 25-04-06, 12:41 AM

WHAT IS A VIEW?

A view is a logical view on one or more tables. A view on
one or more tables i.e. the data from a view is not actually physically stored
instead from one or more tables.

HOW MANY TYPES OF VIEWS ARE THERE?

Database view

Help view

Projection view

Maintenance view.

**Spoorthi** · 26-04-06, 01:32 AM

WHAT IS LOCKING?

When two users simultaneously attempt to access the same
data record, this is synchronized by a lock mechanism.

WHAT IS DATA BASE UTILITY?

Data base utility is the interface between the ABAP/4
dictionary and the underlying the SAP system.

**Spoorthi** · 26-04-06, 01:33 AM

WHAT ARE THE BASIC FUNCTIONS OF DATABASE UTILITY?

The basic functions of database utility are

Create database objects

Delete database objects

Adjust database objects to changed ABAP/4 dictionary
definition.

WHAT IS REPOSITORY INFO SYSTEMS?

It is a tool with which you can make data stored in the
ABAP/4 dictionary available.

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25-04-06, 12:41 AM	#47 (permalink)
Spoorthi Super Moderator Join Date: Mar 2006 Posts: 4,803 Thanks: 9 Thanked 630 Times in 488 Posts Thanks: 9 Thanked 630 Times in 488 Posts Blog Entries: 2 Rep Power: 101	WHAT IS A VIEW? A view is a logical view on one or more tables. A view on one or more tables i.e. the data from a view is not actually physically stored instead from one or more tables. HOW MANY TYPES OF VIEWS ARE THERE? Database view Help view Projection view Maintenance view.

26-04-06, 01:32 AM	#48 (permalink)
Spoorthi Super Moderator Join Date: Mar 2006 Posts: 4,803 Thanks: 9 Thanked 630 Times in 488 Posts Thanks: 9 Thanked 630 Times in 488 Posts Blog Entries: 2 Rep Power: 101	WHAT IS LOCKING? When two users simultaneously attempt to access the same data record, this is synchronized by a lock mechanism. WHAT IS DATA BASE UTILITY? Data base utility is the interface between the ABAP/4 dictionary and the underlying the SAP system.

26-04-06, 01:33 AM	#49 (permalink)
Spoorthi Super Moderator Join Date: Mar 2006 Posts: 4,803 Thanks: 9 Thanked 630 Times in 488 Posts Thanks: 9 Thanked 630 Times in 488 Posts Blog Entries: 2 Rep Power: 101	WHAT ARE THE BASIC FUNCTIONS OF DATABASE UTILITY? The basic functions of database utility are Create database objects Delete database objects Adjust database objects to changed ABAP/4 dictionary definition. WHAT IS REPOSITORY INFO SYSTEMS? It is a tool with which you can make data stored in the ABAP/4 dictionary available.

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