Using the INVOICE table structure shown below, do the follow

Using the INVOICE table structure shown below, do the following:a.  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 any invoice number may reference more than one product. (Hint: This table uses a composite primary key.)b.  Remove all partial dependencies, draw the new dependency diagrams, and identify the normal forms for each table structure you created. c.  Remove all transitive dependencies, and draw the new dependency diagrams. Also identify the normal forms for each table structure you created.Attribute NameSample ValueSample ValueSample ValueSample ValueSample ValueINV_NUM211347211347211347211348211349PROD_NUMAA-E3422QWQD-300932XRU-995748GAA-E3422QWGH-778345PSALE_DATE15-Jan-201015-Jan-201015-Jan-201015-Jan-201016-Jan-2010PROD_LABELRotary sander0.25-in. drill bitBand sawRotary sanderPower drillVEND_CODE211211309211157VEND_NAMENeverFail, Inc.NeverFail, Inc.BeGood, Inc.NeverFail, Inc.ToughGo, Inc.QUANT_SOLD18121PROD_PRICE$49.95$3.45$39.99$49.95$87.75