Author Question: Recovering a database via rollback involves ________. A) restoring the database from the save and ... (Read 220 times)

JGIBBSON · **on:** Jul 7, 2018

Recovering a database via rollback involves ________.

A) restoring the database from the save and reprocessing all the transactions since the save
B) restoring the database from the save and reapplying all the changes made by transactions since the save
C) undoing the changes made by erroneous or partially processed transactions and restarting the valid transactions that were in process at the time of the failure
D) re-creating the database by re-entering all of the data from the beginning and, then reprocessing all of the transactions

Question 2

In IDEF1X, extended E-R model N:M relationships are called ________.

A) nonidentifying connection relationships
B) identifying connection relationships
C) nonspecific relationships
D) category clusters