union< :T1, :T2, ..>

Represents a fixed set of type entries where only 1 of types T1, T2, Tn are defined.

A union datatype can be considered an in-line union declaration.

Example:

• Data : union< :string, :int, :date > Union containing given types. The field Data will contain a value of one of the types.

Using the named syntax below is recommended to clarify the field usage.

Optional Parameters

• union< Name1:T1, Name2:T2, ... > >

  Labels can be optionally specified for the the types making the union a tagged union.

  Example:

  • PrimaryContact: union< Phone:string, Email:string, Address:string >Union containing tagged entries.

• union< FieldName1, FieldName2, ... >

Fields declared in fields {} block can be referenced simply by specifying their name.