User's ID Number

A unique ID Number for each Customer, which must be inputted by the Librarian. If not known, however, the ID Number can be searched using either the Customer's name (Last, First) or the Customer's phone Number.

Call Number

Call Number of the book copy. This will be a 10 digit numeric field, which must be inputted by the Librarian. It can either be provided by the Customer or be looked up in the list of all the books on hold by this current Customer.

Pseudo
Code

Cancel a Hold window

This window contains text entry fields for: Customer's ID and Call Number of the book. It also has another text field to display a message.

Buttons Present: SEARCH, LIST, CLEAR, OK, CANCEL, HELP, PRINT

SEARCH (beside the Customer ID field)

Performs a search for the Customer's ID based on the search criteria as stated in the 'Searching Customers' section.

LIST (beside the Call Number field)

Displays a list of all the books on hold by the Customer whose ID is given in the Customer ID entry field.

CLEAR

Clears the contents in the text entry fields.

OK

Starts processing the canceling-a-hold request using the inputs provided.

CANCEL

Closes the 'Cancel a Hold' window, and return the control to the 'Book Administration' window.

HELP

Provides information about this window, the inputs, and the functions each button performs.

PRINT

Prints a list of books being held by this Customer.

The Librarian clicks on 'OK' button to process the cancel request.

If the message box says that the request has failed, the Librarian can select the CANCEL button to cancel the operation and quit, or the CLEAR button to clear the contents in the text entry field and start the process from step 1 over again.

If the messages box says that the operation is successful, the Librarian can either select the PRINT button to print a report on the held book, or the CANCEL button to quit, or CLEAR button to start over from step 1 for another hold cancel.