Fill in the Missing Event That Causes Deadlock in a Database.There

question 18

Multiple Choice

Fill in the missing event that causes deadlock in a database.There are two processes (P1 and P2) ,each of which needs to update two records (R1 and R2) and the following sequence leads to a deadlock:
1) P1 accesses R1 and locks it.
2) P2 accesses R2 and locks it.
3) ____
4) P2 requests R1,which is locked by P1.

• A) P2 releases R2.
• B) P1 requests R1 again.
• C) P1 requests R2,which is locked by P2.
• D) P2 releases R1.

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Definitions:

Human Males And Females

Refers to the two primary biological sexes in humans, each with distinct physiological and genetic characteristics.

Evolutionary Tendencies

Refers to patterns or directions of evolutionary change within species over generations, often driven by environmental pressures and genetic variations.

Polygyny

is a form of marriage in which a man is married to more than one woman at the same time.

Single Male

Refers to a man who is not married, engaged, or in a relationship at the current time.