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Python GUI Programming Cookbook

You're reading from   Python GUI Programming Cookbook Develop functional and responsive user interfaces with tkinter and PyQt5

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Product type Paperback
Published in Oct 2019
Publisher
ISBN-13 9781838827540
Length 486 pages
Edition 3rd Edition
Languages
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Author (1):
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Burkhard Meier Burkhard Meier
Author Profile Icon Burkhard Meier
Burkhard Meier
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Table of Contents (13) Chapters Close

Preface 1. Creating the GUI Form and Adding Widgets 2. Layout Management FREE CHAPTER 3. Look and Feel Customization 4. Data and Classes 5. Matplotlib Charts 6. Threads and Networking 7. Storing Data in Our MySQL Database via Our GUI 8. Internationalization and Testing 9. Extending Our GUI with the wxPython Library 10. Building GUIs with PyQt5 11. Best Practices 12. Other Books You May Enjoy

Using the SQL DELETE command

In this recipe, we will use the SQL DELETE command to delete the data we created in the previous recipe, Using the SQL UPDATE command.

While deleting data might sound trivial at first, once we get a rather large database design in production, things might not be that easy any more.

Because we have designed our GUI database by relating two tables via a primary to foreign key relation, when we delete certain data, we do not end up with orphan records because this database design takes care of cascading deletes.

Getting ready

This recipe uses the MySQL database, tables, and the data that was inserted into those tables from the previous recipe, Using the SQL UPDATE command. In order to demonstrate...

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