Exam-style question
Try this first
Two clients read the same database record. Each client changes the record and then saves it. The second save overwrites the first change. What problem has occurred?.
- A.A lost update
- B.A syntax error
- C.A failed timestamp
- D.A duplicated database
Model answer
What a good answer should say
- A lost update
Explanation
Why this works
An update is lost when two clients edit the same record and one client's saved change is overwritten by the other client's later save.
Common mistake
No common mistake is linked to this question yet.