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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

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This is a very interesting question from Multiple Sequence Formats & Storage of Information in a Sequence Database in division Collecting & Storing Sequences in Laboratory of Bioinformatics

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Right choice is (a) Relational databases are more useful in the development of biological databases

To explain: The object-oriented database structure has been useful in the development of biological databases. The objects, such as genetic maps, genes, or proteins, each have an associated set of utilities for analysis and display of the object and a set of attributes such as identifying name or references.

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