Compare and contrast the following terms:
a. data administration; database administration
b. repository; data dictionary
c. deadlock prevention; deadlock resolution
d. backward recovery; forward recovery
e. active data dictionary; passive data dictionary
f. optimistic concurrency control; pessimistic concurrency control
g. shared lock; exclusive lock
h. before image; after image
i. two-phase locking protocol; versioning
j. authorization; authentication
k. data backup; data archiving
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