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

Author Question: Explain the importance of documenting changes in database structure. What will be an ideal ... (Read 48 times)

penguins

  • Hero Member
  • *****
  • Posts: 903
on: Jul 7, 2018
Explain the importance of documenting changes in database structure.
 
  What will be an ideal response?

Question 2

In market basket analysis, lift is confidence divided by support.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

pikon

  • Sr. Member
  • ****
  • Posts: 361
Reply #1 on: Jul 7, 2018
Answer to Question 1

Changes in database structure may introduce errors that do not become apparent for long periods of time. Documentation provides a record of changes to assist the investigation into the cause of database errors. Further, documentation of database changes can be used to determine the structure of the database at some point in the past. This is necessary for proper interpretation of any historical records that may need to be retrieved. Finally, documentation can assist in recovering the database from a previous copy in case of database failure. Not only do transactions have to be restored to the recovered database, but also any structural changes since the backup was created will have to be reapplied.

Answer to Question 2

FALSE


penguins

  • Member
  • Posts: 903
Reply 2 on: Jul 7, 2018
Gracias!

daiying98

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

X-Ray Crystallography Helped Reveal the Structure of DNA X-Ray Crystallography Helped Reveal the Structure of DNA
Inverse Relation Between IQ and Disease. Could this explain the Flynn effect? Inverse Relation Between IQ and Disease. Could this explain the Flynn effect?
How self-complementarity dictates the tertiary structure of tRNA How self-complementarity dictates the tertiary structure of tRNA
Structure of Al2Cl6 Structure of Al2Cl6
The quaternary level of protein structure as seen in hemoglobin The quaternary level of protein structure as seen in hemoglobin
Basic Chemical Structure of Amino Acids Basic Chemical Structure of Amino Acids
Video: Wound Cultures

For a complete list of videos, visit our video library