The reason why a database table is in the first normal form (1NF), but not in the second form (2NF) is because: a. There is a non-prime attribute that is partially dependent on the key of the table. d. all of a., b., and c. c. There is an many-to-many relationship embedded in the table. b. There is a nested table or a complex object structure embedded in the table. use(s) block anchoring on the data file. e. all of a., b., and c. c. secondary index d. both a. and b. f. none of a., b., and c. a. primary index O b. cluster index A database is O c. either a. or b. is correct. a. a collection of data O d. neither a. nor b. O b. a collection of data tables A key in a relational database table d. neither a. nor b. a. is a minimal set of attributes. c. both a. and b. b. uniquely identifies a tuple (record) in a relation table.