Page 1 of 1
		
			
				Relationships (1:1)
				
Posted: 
Tue Feb 14, 2012 3:19 pmby wisni1rr
				Hi again,
I am wondering how you can incorporate a 1to 1 relationship with xataface? I have several 1to 1 relationships in my current access project that I am converting to mySQL. I'm not sure how I should approach the situation...
Thanks for any advice you can provide!
			 
			
		
			
				Re: Relationships (1:1)
				
Posted: 
Tue Feb 14, 2012 6:12 pmby samhans
				very easy. just look at the tutorial in the documentation part. 
 if you find any problem then come back.
			 
			
		
			
				Re: Relationships (1:1)
				
Posted: 
Tue Feb 14, 2012 6:53 pmby wisni1rr
				Thanks for helping,
I went through the tutorial. It gives great examples for "1 to many" and "many to many" but I don't gather how to do a "1 to 1" relationship. Consider the following:
[TableA]
ID = INT(11) Auto_Increment, Primary
[TableB]
ID = INT(11)
For every record in [TableA] there can be exactly ONE OR NONE record in [TableB]
Could this be achieved by making ID in [TableB] unique?
			 
			
		
			
				Re: Relationships (1:1)
				
Posted: 
Tue Feb 14, 2012 11:10 pmby samhans
				could you explain more.
do you want any connection between table A and table B to be displayed in table A. or you just want that the id field of the table B to be filled from table A automatically.
			 
			
		
			
				Re: Relationships (1:1)
				
Posted: 
Wed Feb 15, 2012 9:46 amby shannah
				1:1 relationships currently are a bit tricky to deal with.  I've had this on my list for a while but haven't gotten around to it.  You can muddle around with regular relationships and kind of fudge it in there, but we really need to have a special case for 1:1.
			 
			
		
			
				Re: Relationships (1:1)
				
Posted: 
Wed Feb 15, 2012 12:08 pmby wisni1rr
				Thanks for you help!
I've decided to make a 1:many relation and set my many table to have its connecting record Index as Unique.
Thanks again!