mivantechenko9751

12.02.2021 • 

Computers and Technology

Chapter 7 - Problem 7. 22, p330 Whitlock Department Stores runs a multi user DBMS ON a LAN file server. Unfortunately, at the present tale ole
DBMS does not enforce concurrency control Onc Whitlock customer had a balance due of $500
when the following three transactions related to this customer were
processed at about the same time:
• Payment of $500
• Purchase on credit of $100
- Merchandise return (credit) of $50

Ответ:

ayoismeisjjjjuan

26.01.2020

Computers and Technology

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All of them are persistent (will survive a reboot). A CD-rom may also be immutable, if it can't be rewritten.

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