Question: 1. Define entity classes for AUTO Industry--- and draw ERD (entity relationship diagram) 2. What is big data and how can it be applied for

1. Define entity classes for AUTO Industry--- and draw ERD (entity relationship diagram)

2. What is big data and how can it be applied for decision making

3.

define the PK of this relation and justify your answer : (remember the definition of Pk, its values can not repeat in the table)

ENROLLMENT (student_id, class_id, grade)

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