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The Concept Map you are trying to access has information related to:
Rea into database, is represented by different attributes put them in a table tables, tables make possible to combine Information, primary keys their relationships are described by cardinalities, Information created by queries, represents a set (e.g.customers) put them in a table tables, tables linked by primary keys, How to convert an REA into a relational database? each entiy is represented by different attributes, Information to create reprorts, How to convert an REA into a relational database? each entiy represents a set (e.g.customers), tables linked by secondary keys