The characteristics of relations that make them different from ordinary tables and files?

Relations, as defined in relational databases, differ from ordinary tables and files primarily in their structured organization and adherence to a schema. They consist of tuples (rows) and attributes (columns) that maintain a clear relationship through keys, enabling efficient data retrieval and integrity. Additionally, relations support operations like joining and querying, which facilitate complex data manipulation and analysis. Unlike ordinary files, relations enforce data consistency and eliminate redundancy through normalization.