ADABAS basic concepts. Like inverted list, address
converter ,data storage
- 2 Answers
- 18293 Views
- IBM, I also Faced
- E-Mail Answers
Answer Posted / 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 ? | 10 Yes | 1 No |
Post New Answer View All Answers
How to find occurrence of mu and pe fields in a file?
Define cobol coding sheet?
Explain difference between read work file 1 and read work file once? Why we are using work file once?
Explain is it possible to code goto statement in natural? If yes please provide the syntax of the same?
What is the difference between read work file 1 and read work file once? Why we are using work file once?
Explain how to move cursor to a particular field when position is not known?
Explain how to receive data passed through jcl parm parameter in a natural program? How data definition is defined in the program?
What is the difference between read(1) and read work file once?
Explain adabas basic concepts. Like inverted list, address converter ,data storage?
How are you going to remove duplicates from the file that is being read?
What happens when you issue a escape routine in a program? Will there be any compilation /run time erro?
Explain the like inverted list?
Tell me can we update with histogram?
Explain how to find occurrence of mu and pe fields in a file?
How converted the natural coding for adabas
