Explain The Information Contained In Ci

1.	Explain The Information Contained In Ci
Answer» Control information consists of RECORD Descriptor Field and Control Interval Descriptor Field. Each CI contains one CIDF that consists of the LAST 4 BYTES CIDF consists of information about the offset and length of free SPACE in the CI In case of fixed size records, each CI contains 2 RDFs each RDF is of 3 bytes length In case of variable length size records, there will be a separate RDF for each record in the CI. The data portion of the CI should be in the multiples of 512 bytes / 2048 bytes. The maximum size of the CI is 32 KB. - The size of index portion of CI could be any of these 512, 1024,2048,4096

Answer»

Control information consists of RECORD Descriptor Field and Control Interval Descriptor Field.
Each CI contains one CIDF that consists of the LAST 4 BYTES
CIDF consists of information about the offset and length of free SPACE in the CI
In case of fixed size records, each CI contains 2 RDFs each RDF is of 3 bytes length
In case of variable length size records, there will be a separate RDF for each record in the CI.
The data portion of the CI should be in the multiples of 512 bytes / 2048 bytes.
The maximum size of the CI is 32 KB. - The size of index portion of CI could be any of these
512, 1024,2048,4096

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