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CHAPTER 8
Transactions and Versioning
Figure 8-1: Only one writer at a time
Meanwhile, other users can read from the
table at any time. In this
customer
way queries can proceed while the database administrator inserts and deletes
table data. In Figure 8-2, User 3 and User 4 are able to query the
table
customer
while User 1's write transaction remains open.
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