Question 9 A data dictionary holds O table and column names. O descriptions or comments about data tables and columns. O data validation constraints O metadata including data types O all of the above. D | Question 10 A key step in solving 2NF design problems is O Identifying exactly which columns depend on multiple parts of a composite key O Identifying repeating relationships. O Finding examples of non-atomic data. O Finding new/missing keys that determine attribute values. O All of the above Item Reviews ItemID, Description, Category, Price Reviews Date/time, Comment, Rating, Reviewer Screen Name, Date started