Final answer:
A ColumnFamily does not have an infinite number of rows; it is limited by physical resources and practical constraints, making the statement false.
Step-by-step explanation:
The statement regarding a ColumnFamily having an infinite number of rows is false. In computer science, specifically in the context of NoSQL databases, a ColumnFamily is a data structure used to store and manage data. It represents a logical division of rows, where each row is identified by a unique key, and may contain multiple columns. However, the number of rows is not infinite; it is bounded by physical resources and practical limitations such as storage capacity and system architecture.