Which of the following is NOT true when deciding when to use a surrogate key?
A) The advantage with a surrogate key is that it can help prevent some cascading changes from primary to foreign key errors.
B) A surrogate key can increase the file size and require more joins.
C) If the key never has a foreign key, you need a surrogate key.
D) If you have a primary key with a foreign key that may need to be changed frequently or more than normal, a surrogate key should be considered.
Question 2
A table is a collection of data or fields.
Indicate whether the statement is true or false
True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
TrUe....FaLsE
True-color image of layers of haze in Titan's atmosphere.
True Friendship
Which is TRUE about the alternation of generations cycle that is diagramed above?
Midsagittal section indicating locations of true and false pelves