The advantages of using typedef do not include:
a. Making programs more portable by allowing data types to be easily changed to meet system specifications.
b. Making type names shorter.
c. Making programs more readable.
d. Increasing the efficiency of accessing struct member variables.
d. Increasing the efficiency of accessing struct member variables.
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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.