ADABAS basic concepts. Like inverted list, address
converter ,data storage

Answers were Sorted based on User's Feedback

Answer / nagendra rampuria

with evry descriptor inverted list is associated which
tells about all the values of the descriptor with their
counts and the ISNs of the records.

Address convertor is associated with an adabas file whic
tells the block number of an ISN

Datastorage has all the blocks which contains the record.

Is This Answer Correct ?    12 Yes 1 No

Answer / niki

ADABASE the adaptable database, is a high-performance,
multithreaded, database management system for mainframe
platforms where database performance is a critical factor.
It is built on INVERTED LIST model.

Inverted List: it is used to resolve Adabas search commands
and read records in logical sequence, is built and
maintained for each field in an Adabas file that is
designated as a key field or “descriptor”.t is called
an “inverted” list because it is organized by descriptor
value rather than by ISN.

ADDRESS CONVERTOR:it contains the RABN's in ISN order. It
determines the physical location of a record. It is an
index that maps the logical identifier of a record (that
is, the ISN) to the relative Adabas block number (RABN) of
the Data Storage block where the record is stored.

DATA Storage:It stores the actual record in the order in
which it was entered

Is This Answer Correct ?    9 Yes 1 No

Post New Answer

More Natural Interview Questions

syntax for all WRITE COMMAND in natural language

7 Answers  

differnce between read work file 1 and read work file once? why we are using work file once?

4 Answers  

What is the difference between External subroutine and subprogram?

3 Answers  

In a Natural program i used the below code for report FORMAT LS=132 PS=60 And down the line I want to change either LS/PS like FORMAT LS=120 PS=50, is it possible? How it will work?

0 Answers  

why do we use file-aid for seqential files?

1 Answers   Tech Mahindra,

What exactly is a hyperdescriptor? How does it work?

3 Answers  

Can we update with histogram?

2 Answers  

control variable in online screens

3 Answers   Mind Tree,

What is data trace system 2.0 used for?

0 Answers  

Types Of Read , FIND

2 Answers  

how many work file we can code in jcl?

2 Answers  

How can I create 1 DDM that fetches 3 ADABAS files simultaneously?

5 Answers