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

Author Question: Explain First Normal Form and provide examples. What will be an ideal ... (Read 368 times)

Tirant22

  • Hero Member
  • *****
  • Posts: 532
on: Jul 7, 2018
Explain First Normal Form and provide examples.
 
  What will be an ideal response?

Question 2

The symbol X(8 ) represents:
 
  A) eight digits.
  B) eight alphanumeric characters.
  C) a data structure or element that repeats eight times.
  D) an element that is found within eight data structures.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

soda0602

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 7, 2018
Answer to Question 1

The First Normal Form removes repeating groups and arrays. If a column in a Customer table, for example, contained multiple phone numbers, that would be an array. If it contained multiple columns named something like Phone1, Phone2, etc., that would be a repeating group. To make the table conform to First Normal Form the phone numbers should be placed in another entity with a relation to the Customer entity.

Answer to Question 2

B


Tirant22

  • Member
  • Posts: 532
Reply 2 on: Jul 7, 2018
Wow, this really help

meow1234

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

How the study of genomes and proteomes can provide us with connections to different biological level How the study of genomes and proteomes can provide us with connections to different biological level
Examples of hydrogen bonds and DNA Examples of hydrogen bonds and DNA
Effect of pH on drug absorption. (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ... Effect of pH on drug absorption. (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ...
Jostling. A form of coarse vibration that includes mobilizing joints. Jostling. A form of coarse vibration that includes mobilizing joints.
Normal electrocardiogram tracing Normal electrocardiogram tracing
The time at which the mailman delivers the mail to Ace Bike Shop follows a normal distribution ... The time at which the mailman delivers the mail to Ace Bike Shop follows a normal distribution ...
Video: Mendel's pea plant, Pisum sativum experimental

For a complete list of videos, visit our video library