This discussion about the midterm may be of interest to all:
1. In question 2 how is the input given, how do we parse the given Xpath expression?
You can assume that the expression has already been parsed and you have a syntax tree. Parsing is not a focus of this problem.
2. In question 3, databases A and B are exactly the same except for the order in which elements appear in entry right?, Description is little confusing.
A is not in first normal form because it stores SEQUENCES of phone numbers with subscribers. B is in first normal form.
This discussion about the midterm may be of interest to all:
ReplyDelete1. In question 2 how is the input given, how do we parse the given Xpath expression?
You can assume that the expression has already been parsed and you have a syntax tree. Parsing is not a focus of this problem.
2. In question 3, databases A and B are exactly the same except for the order in which elements appear in entry right?, Description
is little confusing.
A is not in first normal form because it stores SEQUENCES of phone numbers with subscribers. B is in first normal form.