• Explain the concept of an addressing algorithm and its applications
(8.5).
• Describe common file processing procedures (9): runs for batch file
updating (9.1); updating a file on-line (9.2); an internal sorting
algorithm and an external sort and merge method (9.3); a com-
mercial sort/merge utility (9.4).
• Describe procedures for ensuring the security and integrity of files:
data validation procedures; file and data control procedures; mech-
anisms for ensuring the security of files; recovery procedures;
ensuring the privacy of files.
File addressing
In Chapter 6 we saw that a major problem of random-acces ...
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