Pattern Constraints
Explore how to enforce data integrity in web applications by applying pattern constraints to string attributes. Understand how to use regular expressions in JavaScript to validate inputs such as ISBN numbers, ensuring your app handles data correctly and reliably.
We'll cover the following...
We'll cover the following...
Pattern constraints in UML
A pattern constraint requires that a string attribute’s value must match a certain pattern, typically defined by a regular expression. For instance, for the object type Book we define an isbn attribute with the datatype String as its range. Then we add ...