Adding Constraints to a Design Model
Explore how to implement data integrity constraints and validation rules within a design model for managing book data using plain JavaScript. Understand mandatory and optional attributes, pattern checks, and range constraints through coding property-specific checks in your model class to ensure reliable data handling.
We'll cover the following...
We'll cover the following...
Design model
We’re going to consider the book data management problem again, but this time, we’ll also consider the data integrity rulesthat govern the management of book data. These integrity rules, or constraints, can be expressed in a UML class diagram as shown in the figure below:
In this model, the following constraints have been expressed: