This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A(n) ________ is one or more columns of a relation that is used to identify a row. Fill in the ... (Read 89 times)

saliriagwu

  • Hero Member
  • *****
  • Posts: 537
on: Jul 7, 2018
A(n) ________ is one or more columns of a relation that is used to identify a row.
 
  Fill in the blank(s) with correct word

Question 2

Which of the following is true about a shared lock?
 
  A) It is more restrictive than an implicit lock.
  B) It allows only two transactions to update a record simultaneously.
  C) It locks the item from all access.
  D) It allows reads to the locked item.
  E) It must use a two-phase locking scheme.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

parshano

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 7, 2018
Answer to Question 1

key

Answer to Question 2

D


saliriagwu

  • Member
  • Posts: 537
Reply 2 on: Jul 7, 2018
Excellent

LVPMS

  • Member
  • Posts: 323
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

The female reproductive system, sagittal view showing organs of the system in relation to the urinar The female reproductive system, sagittal view showing organs of the system in relation to the urinar
Relation between form, particular objects, and images in Plato’s Line. Relation between form, particular objects, and images in Plato’s Line.
Two water pipes together can fill a certain tank in 6 h Two water pipes together can fill a certain tank in 6 h
How to find the maximum and minimum of a quadratic relation How to find the maximum and minimum of a quadratic relation
Nine labels used to identify hazardous materials in the Global Harmonization System (GHS). Top row: ... Nine labels used to identify hazardous materials in the Global Harmonization System (GHS). Top row: ...
Testing client’s ability to identify dull sensation Testing client’s ability to identify dull sensation
Video: Gastrin (gastric emptying) & Secretin (buffering gastric acid)

For a complete list of videos, visit our video library