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-color image of layers of haze in Titan's atmosphere.
Adapoids and omomyoids had longer snouts and are the first “true” primates.
Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o
Project Management: Achieving Competitive Advantage, 5th Edition
A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and ...