How you would model this using a relational database.

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How would your application return the total number of conversations for each user? How would your application return the total number of messages sent to a user? How would the above model differ for a NoSQL database?

What I have tried:

I have attempted a search on this but haven't found an exact concrete answer

Posted 6-Jan-22 1:18am

Ruman 2022

Updated 6-Jan-22 9:02am

v2

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CHill60 6-Jan-22 7:52am

"I have attempted a search on this but haven't found an exact concrete answer" - you won't because you are supposed to do that work for yourself. You haven't given us the rest of your homework text so we couldn't help (even if we did do others homework for them - which we don't)

Richard MacCutchan 6-Jan-22 7:53am

And it is unlikely that you will find an exact answer with such a vague question.

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0x01AA · Answer 1 · 2022-01-06T09:02:00

Solution 1

At a first glance based on your vague input:

The Table with users:

Users
  Id,
  UserThisAndThat

The Tables for the messages:

Messages
  Id
  SendFromUserId
  SendToUserId
  Message

Query example:

SELECT COUNT(*) FROM Messages WHERE SendToUserId = @UserId

Posted 6-Jan-22 9:02am

0x01AA

Updated 6-Jan-22 9:19am

v2