$6$ How is a data model transformed into a database design?Name the three components of a database design. Define normalization and explain why it is important. Define data integrity problem and describe its consequences. Give an example of a table with data integrity problems and show how it can be normalized into two or more tables that do not have such problems. Describe two steps in transforming a data model into a database design. Using an example not in this chapter, show how $1$:N and N:M relationships are represented in a relational database. Describe the users$$ role in the database development. Explain why it is easier and cheaper to change a data model than to change an existing database. Use the examples of Figures $5-25$c and $5-26$c in your answer.