Which of the following describes relational data?

Relational data is characterized by its organization into tables that consist of rows and columns. This structure enables a clear and defined schema, which dictates how data is stored, accessed, and managed. Each table within a relational database holds data about a specific entity, and the relationships between these tables can be established through keys, such as primary and foreign keys. This tabular format supports efficient data retrieval and manipulation through Structured Query Language (SQL).

When data is organized in this structured way, it ensures data integrity and allows for the enforcement of constraints, such as uniqueness and referential integrity. This structured approach contrasts with unstructured data, which does not have a predefined format or schema, and with more flexible data formats which may allow for inconsistencies.