Question: Database tables and apply the requirements below. Primary keys Eliminate duplicate data Eliminate unnecessary dependancies Apply 3 rules of normalization 1NF - 2 NF -
- Database tables and apply the requirements below.
- Primary keys
- Eliminate duplicate data
- Eliminate unnecessary dependancies
- Apply 3 rules of normalization 1NF - 2 NF - 3NF
For the following table:
Given a Table named “Invoices”, where the following data is stored:
- Invoice_Num
- Customer_Name
- Invoice_Date
- Package_Number
- Shipping_Cost
- Total_Before_Taxes
- Total_Taxes = Calculation of taxes
- Total_Invoice = Sum of Total_Before_Taxes and Total_Taxes
- Customer_Address_1
- Customer_Address_2
- Customer_Phone_1
- Customer_Phone_2
- Customer_Email_1
- Customer_Email_2
- Invoice_Registry_Date
- Registry_Username = Username that registered the invoice.
- Current_State_Invoice
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