Question: How many optional columns will the relational schema mapped from the Central School Library ER diagram have?01234 CENTRAL SCHOOL LIBRARY ERD LBID LBName CopyID CoverType

How many optional columns will the relational schema mapped from the Central School Library ER diagram have?01234

How many optional columns will the relational
CENTRAL SCHOOL LIBRARY ERD LBID LBName CopyID CoverType LIBRARY BOOK Has COPY (2,10) Is WrittenBy AUTHOR AuthorID AuthorName

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