Updating your data model Maintain data integrity by updating your data model when changes occur. Use the following techniques to update your data model resources: Defining the fields in a data object Define fields to structure the data that a form displays. You can add fields to data objects and specify the field type, such as Picklist, Boolean, or Text (single line). For example, to include a field that displays a list of available courses in an Onboarding application, you might add a Courses field to a data object, and then select Picklist as the field type. Changing the type of a field To store data in a different format, change the type of a field. Reusing data records Add a data reference list to your data model to refer to data records for a data object. Referencing data from another data object Create reusable data for your application and build easy to maintain forms by using a data reference. Adding data relationships to forms and data models To decrease application development time and costs, reuse data objects across your application by creating data relationships. When you create a data relationship, you create connections to all of the fields that you define within one data object or case type. When you update a data object, the change occurs across all of the elements that you relate to the data object. As a result, you save time and create an efficient application that is convenient to maintain.