Final answer:
Tables are the foundation, and relationships are the mortar that holds a database together.
Step-by-step explanation:
In the context of a database, the tables serve as the foundation, containing the actual data. The relationships between these tables are the mortar that binds the database together, ensuring the integrity and coherence of the data. For example, in a database for a school system, you might have tables for students, courses, and grades, with relationships connecting them based on student enrollment and course completion.