A database Deadlock a. is a lock placed on a record to prevent it from being accessed by other processes. b. occurs when two records ..

A database Deadlock

a. is a lock placed on a record to prevent it from being accessed by other processes.

b. occurs when two records are accidentally assigned the same primary key

c. occurs when a unique record is accessed by several different processes simultaneously.

d. is none of the above.

Solutions

Expert Solution

The correct answer is:

d. is none of the above.

Explantion:

A database deadlock occurs when two or more transactions are waiting for each other to release locks on data, causing them to be stuck indefinitely. It's a situation where each process holds a lock on a resource that the other process needs in order to proceed, leading to a deadlock state where neither can progress.

The correct answer is: (d).

Junaid answered 7 months ago

Next > < Previous

Related Solutions

Q) A shared lock is issued when a transaction must read data from the database and...

Q) A shared lock is issued when a transaction must read data from the database and no exclusive locks are held on the data to be read.” Is it correct? Justify the answer by explaining the conditions (or by an example) under which both types of locks are granted

6. When monopolies waste resources attempting to prevent other firms from competing with them, it is...

6. When monopolies waste resources attempting to prevent other firms from competing with them, it is referred to as: A. rent seeking. B. price fixing. C. cream skimming. D. price discriminating. 7. Price discrimination by a monopolist leads to the firm earning higher profits but it also delivers benefits to: A. competitors, because the good produced by the monopolist becomes more expensive. B. consumers, because consumer surplus increases because of the monopolist’s pricing actions. C. consumers, because prices are lowered...

A and B are summits of two mountains that rise from a horizontal plain. B being...

A and B are summits of two mountains that rise from a horizontal plain. B being 2200 meters above the plain. Find the height of A, it being given that its angle of elevation as seen from a point C in the plain ( in the same vertical plane with A and B ) is 60 degrees, while the angle of depression of C viewed from B is 38 degrees 58 minutes and the angle subtended at B by AC...

Two balls are placed, one above the other, and dropped from a height of 1.47 m....

Two balls are placed, one above the other, and dropped from a height of 1.47 m. The bottom ball has a mass which is 7 times the mass of the top ball. They are dropped from rest. When the balls strike the floor, they have a head on, elastic collision with one another. (Assume that the bottom ball strikes the floor, instantly reverses direction, and then collides with the top ball, which is still travelling downward.) How high will the...

Two balls are placed, one above the other, and dropped from a height of 1.4 m....

Two balls are placed, one above the other, and dropped from a height of 1.4 m. The bottom ball has a mass which is 10 times the mass of the top ball. They are dropped from rest. When the balls strike the floor, they have a head on, elastic collision with one another. (Assume that the bottom ball strikes the floor, instantly reverses direction, and then collides with the top ball, which is still travelling downward.) How high will the...

Sexual dimorphism occurs when males are distinctly different from females in traits other than reproductive organs....

Sexual dimorphism occurs when males are distinctly different from females in traits other than reproductive organs. In many species, there is no dimorphism and males resemble females in most traits. If the two sexes appear phenotypically identical, in a short essay (100-150 words), explain what you might conclude (at least tentatively) about their reproductive behaviors.

When viewed from the highest to most elemental level, the data hierarchy is a. attribute, record, file. b. record, attribute, key. c. file, record, attribute. d. file, record, key. e. key, record, file.

When viewed from the highest to most elemental level, the data hierarchy is a. attribute, record, file. b. record, attribute, key. c. file, record, attribute. d. file, record, key. e. key, record, file.

1. Countries are _____ when they buy products and services from other countries. A. exporters B....

1. Countries are _____ when they buy products and services from other countries. A. exporters B. retailers C. importers D. wholesalers 2. Which is true of an Absolute Advantage? A. You are the only producer or source of the product. B. You can produce the product with less resources than others. C. This advantage does not last long. D. all of the above 3. Opportunity cost means: A. what you give up to make the product B. what you will...

Bacteriology: 1. Adaptive immunity occurs when.. A) death results from pathogen infection. B) the innate immune...

Bacteriology: 1. Adaptive immunity occurs when.. A) death results from pathogen infection. B) the innate immune response is overly effective. C) a broad, rapid response is needed to a wide range of pathogens from the body regardless of the specific type of pathogen. D) the innate immune response fails to eliminate pathogens in the body and virulent infections persist after the initial innate defense response. 2. Stem cells are produced and developed in the.. A) bone marrow. B) brain. C)...

Two objects, A and B, are released from rest in free space (no other masses are...

Two objects, A and B, are released from rest in free space (no other masses are near). Object A has a greater mass than object B. They accelerate toward each other under the action of their mutual gravitational attraction. a. On which object is the greater work done? b. At the instant just before they hit, which object will have the momentum with the greatest magnitude? c. At the instant just before they hit, which object will have the greater...

Subjects