some SQL Questions i need help on

Question 1: Define the term entity and give an example other than those used in this book.

Question 2: Define the term attribute and give examples for the entity you described in question 1.

Question 3: Define the term identifier, and indicate which attribute defined in your answer to question 2 identifies the entity.

Question 4: Define the term relationship and give an example other than those used in this book.

Question 5: List and give an example of the three types of binary relationships other than the ones used in this book. Draw a traditional E-R diagram for each. Follow the formats shown in Figure 4-5.