Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/5

Click to flip

5 Cards in this Set

  • Front
  • Back
What is enity-relationship model (ER) or entity-relationship diagram (ERD)?
This is a graphical relationship of data structure.
What is "Entities?"
Data objects that describe a person, place thing, or event, suchas as employee, company, publisher, author, patient, hospital, and admission.
What are relationships?
Associations between entities that are usually described by verb phrases, such as employees, publishes, teaches...
What are Attributes?
The elements that provide description and detail about entities and relationships. This may include, name, date, diagnosis, etc.
What is the first form of Normalization?
An entity is in first normal form if no repeating groups exist.