Entity:
FX 470 23
null  * 
rate double 3 false false false timePoint double 3 false false false

Entity:
Currency 69 40
null  * 
name String 3 false true false symbol String 3 false false false

Operation:
rateTo
Currency
double
foreignc String t double 
 query
true
fx = fxto[foreignc]->select(timePoint = t)->any() & result = fx.rate


Association:
Currency FX 0 313 47 470 34 0 fxto null 
qualifier to 

Association:
Currency FX 0 314 99 472 69 0 fxfrom null 
qualifier from