Final answer:
The domain model is a key element used as input for database design, providing a schematic blueprint of data objects and their interrelationships to influence the database schema.
Step-by-step explanation:
The domain model is a conceptual representation of the system which includes the various entities and their relationships which is typically used during the software development lifecycle. This model plays a significant role in various design activities, and one area in particular where the domain model is consistently used as input is in database design. When designing a database, the domain model provides an essential outline that explains how data objects interrelate, which greatly influences the database schema that organizes these objects within the database.