relations categorized based on which modification anomalies or other problems they're subject to  functional dependencies: 1nf, 2nf, 3nf, bcnf  multivalued dependencies: 4nf
relations categorized based on which modification anomalies or other problems they're subject to  functional dependencies: 1nf, 2nf, 3nf, bcnf  multivalued dependencies: 4nf
a state of a relation that requires certain rules regarding functional dependencies are satisifies; higher level nf is build upon lower level nf