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 69 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
Thanks for the timely response, appreciate it

Laurenleakan

  • Member
  • Posts: 309
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Endotracheal intubation. First, a lighted scope is used to identify the trachea from the esophagus. Endotracheal intubation. First, a lighted scope is used to identify the trachea from the esophagus.
Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry. Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry.
A food diary can help patients identify unhealthy eating habits and make healthy choices. A food diary can help patients identify unhealthy eating habits and make healthy choices.
Columns With Papyriform And Bud Capitals, Hypostyle Hall, Great Temple Of Amun At Karnak Columns With Papyriform And Bud Capitals, Hypostyle Hall, Great Temple Of Amun At Karnak
Can you identify the banding patterns predicted by each model after the first round of ... Can you identify the banding patterns predicted by each model after the first round of ...
Directions: Fill in the correct number or word(s). Order: Lantus U-100 insulin 68 units subcut ... Directions: Fill in the correct number or word(s). Order: Lantus U-100 insulin 68 units subcut ...
Video: Proteins Defined, Hierarchy & Composition of Cells

For a complete list of videos, visit our video library