Specifies a minimum value for a field. This is different to minLength which checks the number of items in the value. 
A minimum value constraint checks whether a field value is greater than or equal to the specified value. 
The range checking depends on the type of the field. E.g. an integer field may have a minimum value of 100.
If a minimum value constraint is specified then the field descriptor MUST contain a type key.
constraints.checkMinimum(constraint, value)
| constraint | numeric constraint value | 
|---|---|
| value | numeric value to meet the constraint | 
TRUE if value is equal to or greater than the constraint
#> [1] FALSEconstraints.checkMinimum(constraint = 2, value = 3)#> [1] TRUE