Indexing Demonstration (Cont.)

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The following interface is the main interface for demonstrating the use of an index for the book data file. This interface includes the following major operations:

• Downloads a book data file data.txt and its index index.txt.
• Adds books to the book data file.
• Updates its index when a record is added to the data file.
• Selects a record by giving a specific key, an ISBN.
• Shows the contents of a data file and its index.

Select an Option to Use the System.
Data file:     Index file:	Download data and index Enter books Show data and index Help
Password:

Before going for the details, note the following two comments:

• Our implementation is gradually away from the program examples of the textbook, which are getting too complicated to comprehend.


• For programming exercises and exam problems, you may have your own implementation as long as
  
  
  • It is able to get the jobs done.
  
  
  • It is working on the Unix servers such as aero.und.edu and shell.aero.und.edu of the Aerospace School.
  
  
  • It meets the exercise and exam requirements.