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Informatics 121 Software Design I

Learn how to design a software solution for managing a French fry food truck business, including menus, orders, inventory, and sales records. Discover expert practices for effective problem-solving and time-saving techniques.

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Informatics 121 Software Design I

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  1. Informatics 121Software Design I Lecture 11 Duplication of course material for any commercial purpose without the explicit written permission of the professor is prohibited.

  2. Announcements • There will be discussion this Friday • Midterm is this Thursday • Bring your student ID, we will be checking it

  3. Today’s lecture • Design practice

  4. French fries and mayonnaise

  5. French fries and mayonnaise

  6. French fries and mayonnaise

  7. French fries and mayonnaise • Multiple frietwagens • Multiple employees • Varied menus • Varied pricing • with ‘grouping’ • I owe you’s • Inventory • Different reports

  8. Things we need to model • Frietwagens • Owners • Employees • Orders • Customers • Type of trucks • Product • fries • condiments • Combo • Transaction • Inventory • Supplier • Menu • Menu item • Food • Payment method • Report

  9. Where is the essence? • Reports? • Condiments? • Inventory? • Owners? • …

  10. Example 1: representing menus

  11. Example 1: representing menus

  12. Example 1: representing menus

  13. Example 1: representing menus

  14. Example 1: representing menus

  15. Example 1: what do we really need?

  16. Example 2: accurate record of sales

  17. Example 2: accurate record of sales

  18. Example 2: accurate record of sales

  19. Example 2: accurate record of sales

  20. Example 2: accurate record of sales

  21. Example 2: accurate record of sales

  22. Example 2: accurate record of sales Split payments? Cashbacks? I owe you’s? Partial I owe you’s?

  23. Example 3: groups of frietwagens

  24. Expert practices we (should have) used • Solve simpler problems first • Go as deep as needed • Simulate continually • Focus on essence • Generate alternatives • Are alert to evidence that challenges their theory • Think about what they are not designing • Invest now to save time later

  25. Experts prefer solutions that they know work

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