Design a deferred-update pessimistic concurrency control.
What will be an ideal response?
Even though writes are deferred, a transaction must obtain a write lock when a write
statement is executed (before the newvalue is written to the intentions list). There is
no conflict between two write operations because the new values will be stored in the
database at commit time in commit order.
You might also like to view...
Which of the following is not true of object-oriented design?
a. OOD takes advantage of inheritance relationships. b. OOD encapsulates attributes and operations into objects. c. OOD focuses on actions (verbs). d. Each class can be used to create multiple objects.
A common business practice is to include a worksheet named Documentation that contains a description of the workbook, the name of the person who prepared the workbook, and the date it was created. _________________________
Answer the following statement true (T) or false (F)