SQL Database table: Relations, Attributes and Tuples Document Preview:
OWE. Project 4 Examine the following relation and its attributes and answer the following questions. Assume these are the values for “all time”. Assume girls with the same name are the same person. PRICE GIRL GROUP AGE GAME CATEGORY Charlotte 5 year olds 5 Mirror Makeup 4.88 Susan 6 year olds 6 Lipstick Makeup 5.95 Jane 5 year olds 5 Chess Games 7.55 Susan 6 year olds 6 Checkers Games 5.95 Susan 6 year olds 6 Mirror Makeup 4.88 Carrie 6 year olds 6 Lipstick Makeup 5.95 Jacqueline 5 year olds 5 Visual Basic Prog. Languages 199.99 1) Is this relation in at least 1NF? Why or why not? 2) What is the primary key of the initial relation (assume the values shown are the only possible tuples for all time)? Remember that a primary key must be unique and not null. data anomalies that exist if we DELETE the tuple containing 3) Describe the specific Jacqueline. 4) Draw a functional dependency diagram for the initial relation. This diagram should agree with the primary key you selected in above. Based on your diagram, what normal form is the initial relation in? Why? 5) 6) If necessary, decompose the initial relation into a set of non-loss 3NF relations by attribute showing the relations, attributes, and tuples. Show complete relations with of your relations. Determine the number of headings and all data values in the tuples this number, and then circle 3NF relations you end up with after normalization, write the number.