1. First Normal form For tutorial

2. TNF Exercise. Objective. –To practise the normalisation technique and to produce a set of optimised relations from the normalisation of six documents. Method. –1. Apply the rules of normalisation to the supplied documents. –2. Note the business rules.

3. How to get to 1NF Represent the form in Data Dictionary format (UnNormalisedFormat) –List fields, separated by +, surrounding repeating fields by {} Pick out a set of fields that make each example of the form unique, to make the PRIMARY KEY. – the name of the form or report is a clue Remove derived fields –E.g. sum, total, product (as in multiplication)

4. Contd Separate the repeating groups out, to make a new form, FORM2, leaving the non- repeating groups and the primary key as FORM1. Copy the primary key from FORM1 into FORM2 as a FOREIGN KEY. Pick a new PRIMARY key for FORM2.

5. Supplied Documents Product Sales Report Wellingtons Invoice Product Stock Report Sales Executive report New Product / Amendment Customer Amendment

6. Business Rules Product Code is not unique – each may have a number of pack sizes. Some Customers are allowed a discount. Each item has a Standard Price and up to 3 discount prices. A customer entitled to a discount has a single discount code A, B, C and will be charged the appropriate A, B or C price for all Products he orders. At any Warehouse, a Product is only stocked in one bin. The bin code may be considered unique to a warehouse. A customer deals with one, and only one, Sales Executive.

7. Product Sales Report

8. Unnormalised Product Sales Report

9. Unnormalised Form Product Code + PackSize + ProductDescription + {InvoiceNumber + InvoiceDate + CustomerNumber + CustomerName + InvoiceQuantity + LineValue}

10. First Normal Form ProductCode+PackSize + ProductDescription (ProductCode + PackSize) + InvoiceNumber + InvoiceDate + CustomerNumber + CustomerName + InvoiceQuantity + LineValue

11. First Normal form Product Sales Report

12. Invoice

13. Unnormalised Invoice

14. Unnormalised Form InvoiceNumber + InvoiceDate + CustomerNumber + CustomerName + CustomerInvoiceAddr + {ProductDescription + ProductCode + PackSize + StandardPrice + DiscountCode + DiscountPrice + InvoiceQuantity + LineValue} + InvoiceValue

15. First Normal Form InvoiceNumber + InvoiceDate + CustomerNumber + CustomerName + CustomerInvoiceAddr + DiscountCode InvoiceNumber + ProductCode + PackSize + ProductDescription + StandardPrice + DiscountPrice + InvoiceQuantity

16. First Normal Form

17. Product Stock Report

18. Unnormalised Product Stock Report

19. Unnormalised Form ProductCode + PackSize + Warehouse + StockQuantity + BinCode + NoOrdYTD + StockQuantityTotal + NoOrdYTDTotal

20. First Normal Form ProductCode + PackSize + StockQuantityTotal + NoOrdYTDTotal ProductCode + PackSize + Warehouse + StockQuantity + BinCode + NoOrdYTD

21. Unnormalised Product Stock Report

22. Sales Executive Report

23. Unnormalised Form SalesExecutive + CustomerNumber + OrdersYTD + ValueOrders + DiscountCode + OrdersYTDTotal + ValueOrdersTotal

24. First Normal Form SalesExecutive + OrdersYTDTotal + ValueOrdersTotal CustomerNumber + SalesExecutive + OrdersYTD + ValueOrders + DiscountCode

25. New Product / Amendment

26. Un-normalised Form ProductCode + PackSize + ProductDescription + PrescriptionIndicator + UnitQuantity + UKDrugRegNo + MinimumStock + DiscountCode + DiscountPrice

27. First Normal Form ProductCode + PackSize + ProductDescription + PrescriptionIndicator + UnitQuantity + UKDrugRegNo + MinimumStock ProductCode + PackSize + DiscountCode + DiscountPrice

28. Customer Amendment

29. Unnormalised Form CustomerNumber + SalesExecutive + PreferredCustomer + CustomerName + CustomerInvoiceAddr + CreditLimit + BulkPackOnly + DiscountCode + LicensedDrugVendor + CustomerDeliveryAddress

30. First Normal Form As for unnormalised form.