Coming from question [“Relation” versus “relationship”](https://english.stackexchange.com/questions/15208/relation-versus-relationship/15218#15218) 

What are definitions of "relation" vs. "relationship" in RDBMS (or database theory)? 

Update:  

I was somewhat perplexed by comment to my question: 

> 
> "relation is a synonym for table, and
>  thus has a very precise meaning in
>  terms of the schema stored in the
>  computer"
> 
> 
> 

Update2:  

Had I answered incorrectly that question , in terms of RDBMS, having written that relation is one-side direction singular connection-dependence-link,  

i.e. from one table to another while relationship implies (not necessarily explicitly) more than one link connection in one direction (from one table to another)?