ALEX P Week3 Databases #19
Open
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
dyaboykyl
approved these changes
Jan 20, 2025
| Save all answers in a text file / MD file. | ||
|
|
||
| 1. What columns violate 1NF? | ||
| - the columns food_code and food_description violate 1NF because they contain non-atomic values. |
There was a problem hiding this comment.
minor: non-atomic is probably not the term you're looking for. Maybe non-singular?
| - Dinners: information about dinner events (dinner_id, dinner_date, venue_code, venue_description). | ||
| - Venues: information about venues (venue_code, venue_description). | ||
| - Foods: store information about food (food_code, food_description). | ||
| - Dinner_Foods: relationship between dinners and food (dinner_id, food_code). |
There was a problem hiding this comment.
minor: A relationship is not necessarily an entity
|
|
||
| 2. What entities do you recognize that could be extracted? | ||
| - Members: store information about club members (member_id, member_name, member_address). | ||
| - Dinners: information about dinner events (dinner_id, dinner_date, venue_code, venue_description). |
There was a problem hiding this comment.
minor: the dinner the entity should only describe information about the dinner (venue_description describes the venue)
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.