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

Author Question: Parenthesis represent an optional element in the data dictionary. Indicate whether the statement ... (Read 49 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 7, 2018
Parenthesis represent an optional element in the data dictionary.
 
  Indicate whether the statement is true or false

Question 2

Briefly explain the difference between an inner and an outer join.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

morganmarie791

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 7, 2018
Answer to Question 1

TRUE

Answer to Question 2

Inner joins return all the related tables from the two tables involved in the join. They do not return any records that do not have a related record. Outer joins return all the records from one of the tables in the join even if they do not have a related record in the other table. In the second table only the related records are returned.


ETearle

  • Member
  • Posts: 580
Reply 2 on: Jul 7, 2018
Thanks for the timely response, appreciate it

juliaf

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

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?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

A revised animal phylogeny based on molecular data of SSU rRNA A revised animal phylogeny based on molecular data of SSU rRNA
The fossil record of chimpanzees is sparse. The femur from Kikongo, Uganda (c) may represent a late The fossil record of chimpanzees is sparse. The femur from Kikongo, Uganda (c) may represent a late
Distribution of Thunderstorms: Detailed data on cloud-to-ground lightning flashes have been ... Distribution of Thunderstorms: Detailed data on cloud-to-ground lightning flashes have been ...
The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ... The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ...
The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ... The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ...
Inferring Productivity from Data on Output and Factor Accumulation Inferring Productivity from Data on Output and Factor Accumulation
Video: Vasectomy

For a complete list of videos, visit our video library