Exercise 3: Consider the table below. This table is used by an art school that offers art courses to the general public. This table has modifications problems. 1. List two cases in which modifying the data will cause inconsistencies (loss of information/incorrect information/redundant information). We can remove the problems and ambiguities by creating a separate table for each theme represented in the list. 2. How many themes can you identify? 3. Design a table corresponding to each theme with its attributes. 4. Find or define a key for each table 5. Draw the schema for each table and show the primary keys and foreign keys as applicable for each. Fee Customer Phone Course Date Amount Paid Course Adv Pastels $500 Beg Oils Adv Pastels $500 Int Pastels $350 Adv Pastels $500 Beg Oils $350 Adv Pastels $500 Beg Oils 206-555-1234 10/01/2009 $250 Ariel Johnson Robin Green 312-555-8860 9/15/2009 $350 Paul Jackson 306-555-1488 10/1/2009 $500 Ariel Johnson Jeff Parson 212-555-6678 10/1/2009 $500 Miguel Sears 770-555-2345 9/15/2009 $350 206-555-1234 |3/15/2009 $350 Leah Kyles 444-555-6666 11/15/2009 $250 Lynda Myers 509-334-6267 10/15/2009 $0 $350