Final answer:
Relationships are indeed part of the metadata of a database, as they describe how tables and columns are interconnected. This includes foreign keys and association tables that define the links and interactions among data pieces.
Step-by-step explanation:
Yes, relationships are indeed a part of the metadata of a database. Metadata in a database context is data that describes other data. For databases specifically, this includes descriptions of the structure of the database, such as the data model, tables, columns, and it particularly includes the relationships between those tables and columns. These relationships, such as foreign keys and association tables, define how different pieces of data in the database are connected and interact with each other. For instance, in a typical school database, there might be a relationship between a table containing student records and another containing class information, where the relationship indicates which students are enrolled in which classes. This association is part of the database's metadata since it informs the database how to link records from the two tables.