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Add a couple of questions

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On various topics such as Containers, GitHub Actions,
Azure and more. Enjoy :)
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abregman
2021-11-01 01:20:42 +02:00
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exercises/databases/solutions/table_for_message_board_system.md Normal file
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## Database Table for Message Board System
### Instructions
Design a database table for a message board system. It should include the following information:
* Personal details
* Who saw the message and when
* Replies
* Tagged people in the message
* Message categories
Notes:
* No SQL is needed
* You should include: table names, field names, data types and mention the foreign keys used.
### Solution
Note: This is just one possible design
2nd Note: PK = primary key, FK = Foreign key
----- People -----
ID int PK
FirstName varchar(255)
LastName varchar(255)
DOB date
Gender varchar(1)
Phone varchar(10)
| \
| \
| \
v \
\
--- Messages --- v
ID int PK
MessageBoardID FK --- MessageTags ---
--- MessageBoards --- PeopleID int FK ID int PK
ID int PK ----> MsgDate datetime ---> MessageID FK
Board text Message text PeopleID int Fk
MessageID (FK)
^ |
| |
|______|

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exercises/databases/table_for_message_board_system.md Normal file
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## Database Table for Message Board System
### Instructions
Design a database table for a message board system. It should include the following information:
* Personal details
* Who saw the message and when
* Replies
* Tagged people in the message
* Message categories
Notes:
* No SQL is needed
* You should include: table names, field names, data types and mention the foreign keys used.