As long as two transactions, T1 and T2, access data, there is no conflict, and the order of execution
outcome.
shared
common
unrelated
locked
A characteristic of operational data is.
summarized data
hundreds of gigabytes
high normalization
historic data
transparency ensures that the system will continue to operate in the event of a node failure.
Transaction
Distribution
Failure
Performance
An specifically reserves access to the transaction that locked the object.
shared lock
exclusive lock