Alyssa SiricoChapter 2 Review Questions CRJ 3071.What is a relation?2.What is a relational database?3.What is an unnormalized relation? Is it a relation according to the definition of the word relation?4.How is the term attribute used in the relational model? What is a more common name for attribute?5.Describe the shorthand representation of the structure of a relational database. Illustrate this technique by representing the database for Colonial Adventure Tours shown in Figures 1-5 through 1-19 in Chapter 1.To display the shorthand representation of the structure of a relational database, you write the name of the table and then, within parentheses, list all the columns in the table.