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(MYSQL) Table relationship and Foreign key


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Hello friends

 

I got a problem with Mysql.

 

I want to link ONE UID in table Account to MANY UID in table Chat

I set UID as foreign key in table Chat and then, references to account (UID)

 

I tried to use Navicat to make a relationship but not succeed

 

What I want is UID in table Chat MUST be one of the UID in table Account

 

This is images:

YQgYbbE.png

ciVTENe.png

 

UID in this table is NOT one of UID in table Account 

dHtL3Fq.png

 

Longing for your helps!

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