Accounting information system

Qussnou 1 (1o Marks] a. Identify three {3} advantages relational databases provide over other database models. [3 Marks} b. Explain the relationship between a primary key and a foreign key in a relational database. [3 Marks] c. Wendy's Ice Cream Shop has contracted 1you to Implement a relational database system to help them keep track oftheir Sales. Design at least two {2} tables that would be needed to capture data for a sales transaction to allow Wendy's to review monthly sales reports. Each table should Include a primary key, two {2} non-key attributes and foreign keys as necessary. Create data values for two {2] records within each table. [4 marks}