1. Write the relational schema, draw its dependency diagram, and identify all dependencies, including all partial and transitive dependencies. You can assume that the table does not contain repeating groups and that an invoice number references more than one product. (Hint: This table uses a composite primary key.)

2. Remove all partial dependencies, write the relational schema, and draw the new dependency diagram. Identify the normal forms for each table structure you created.

3. Remove all transitive dependencies, write the relational schema, and draw the new dependency diagram. Also, identify the normal forms for each table structure you created.

\begin{tabular}{|l|l|l|l|l|l|} \hline ATTRIBUTENAME & SAMPLE VALUE & SAMPLE VALUE & SAMPLE VALUE & SAMPLE VALUE & SAMPLE VALUE \\ \hline INV_NUM & 211347 & 211347 & 211347 & 211348 & 211349 \\ \hline PROD_NUM & AA-E3422QW & QD-300932X & RU-995748G & AA-E3422QW & GH-778345P \\ \hline SALE_DATE & 15 -Jan-2018 & 15Jan2018 & 15 -Jan-2018 & 15 -Jan-2018 & 16Jan2018 \\ \hline PROD_LABEL & Rotary sander & 0.25-in.drill bit & Band saw & Rotary sander & Power drill \\ \hline VEND_CODE & 211 & 211 & 309 & 211 & 157 \\ \hline VEND_NAME & NeverFail, Inc. & NeverFail, Inc. & BeGood, Inc. & NeverFail, Inc. & ToughGo, Inc. \\ \hline QUANT_SOLD & 1 & 8 & 1 & 2 & 1 \\ \hline PROD_PRICE & $49.95 & $3.45 & $39.99 & $49.95 & $87.75 \\ \hline \end{tabular}