Which_of_the_given_statements_is_incorrect_about_Database_Types?$

• A. Relational databases are more useful in the development of biological databases
• B. The tables in relational database are carefully indexed and cross-referenced with each other, sometimes using additional tables, so that each item in the database has a unique set of identifying features
• C. The relational database orders data in tables made up of rows giving specific items in the database, and columns giving the features as attributes of those items
• D. The two principal types of DBs are the relational and object-oriented databases