Simple types

Simple types are platform-neutral primitive datatypes provided by common-base.

1. Built-in simple types

• String
• Integer
• Long
• Boolean
• Date
• DateTime
• Id (semantic type)

2. Custom simple types

type<string> CurrencyCode

3. Constants

type<string> LanguageCode = "EN", "DE"

4. Default properties & propagation

Simple types can define default constraints (e.g., maxLength).