Chapter 13, Problem 12E

Explanation of Solution

Allocation of records to blocks:

• The files are organized logically as a sequence of records. These sequences of records are mapped onto disk blocks.
• The files are provided as a basic construct in operating systems.
• In two ways, the logical models can be represented in terms of files.
• One approach is to map the database to files is to use several files and to store records of only one fixed length in any given file.
• The second approach is to structure the files as accommodating multiple length for records...