Mandatory Value Constraints
Explore how mandatory value constraints enforce required property values across different languages and frameworks. Understand UML multiplicity, SQL NOT NULL, JavaScript checks, and validation annotations to improve data integrity and validation in front-end applications.
We'll cover the following...
We'll cover the following...
Mandatory value constraints in UML
A mandatory value constraint requires that a property must have a value. This can be expressed in a UML class diagram with the help of a multiplicity constraint expression where the lower multiplicity is 1. For a single-valued property, this would result in the multiplicity expression 1..1, or ...