#22-- An instructor has a set of books on his shelf. These books vary in type. She has programming, database, operating system and computer network books. She wants you to create a database for tracking books on her bookshelf. List ALL the column names you would use for a table that will hold the required information (LIMIT of at most 10 columns). I only need the column names.

#23 -

Assume, I have a table named Schedule with the following column names and sample data. Which column or columns are good candidates for a primary key column? Of course, the table may have many rows. The following 2 rows are just an example of 2 rows. Do NOT add a new column, use the given information to answer this question.

fname	lname	startTime	endTime
joe	miller	8	5
bill	jones	1	4