Happy Shop sells different products to the customers. A customer could buy one or more products at a time. An invoice will be issued to a customer for each purchase. Table 1 is used to record all the data in the shop. Customer Customer Date Product Product Quantity Invoice No ID Name ID Price 001 Helen N123 21/3/2022 P12 $50 3 001 Helen N123 21/3/2022 P13 $67 5 001 Helen N124 25/3/2022 P12 $50 7 002 Mary N125 28/3/2022 P14 $87 2 003 Davis N126 28/3/2022 P12 $50 3 003 Davis N126 28/3/2022 P15 $26 6 Table 1: Happy Shop Database (a) Identify the primary key with minimum number of attributes of Table 1 and discuss THREE different update anomalies in Table 1 with examples. (b) State the normal form that Table I belongs to. Then, normalize Table 1 to 3NF by showing the table schema for each table.

Happy Shop sells different products to the customers. A customer could buy one or more products at a time. An invoice will be issued to a customer for each purchase. Table 1 is used to record all the data in the shop. Customer Customer Date Product Product Quantity Invoice No ID Name ID Price 001 Helen N123 21/3/2022 P12 $50 3 001 Helen N123 21/3/2022 P13 $67 5 001 Helen N124 25/3/2022 P12 $50 7 002 Mary N125 28/3/2022 P14 $87 2 003 Davis N126 28/3/2022 P12 $50 3 003 Davis N126 28/3/2022 P15 $26 6 Table 1: Happy Shop Database (a) Identify the primary key with minimum number of attributes of Table 1 and discuss THREE different update anomalies in Table 1 with examples. (b) State the normal form that Table I belongs to. Then, normalize Table 1 to 3NF by showing the table schema for each table.

Np Ms Office 365/Excel 2016 I Ntermed

1st Edition

ISBN:9781337508841

Author:Carey

Publisher:Carey

Chapter3: Performing Calculations With Formulas And Functions

Section: Chapter Questions

Problem 1.3CP

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