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You have been asked to design a database of documents, authors, and readers. described as follows: Document: has a docID, title Publisher: each author is the creator of several documents, and each document is published by one or several publishers. Readers: each reader reads several documents, and each document is read by several readers. Draw an E/R diagram, which includes entity, attributes, and relationships. Remember to indicate the key for each entity, as well as the multiplicity of each relationship using the appropriate notation. (You may presume your own scenario)