Figure 3From: Protein intrinsic disorder toolbox for comparative analysis of viral proteinsAn entity-relationship (ER) diagram of the viral protein database. Each entity contains attributes. The type of relationships is shown by the connector and/or the black circle. For example, a black circle followed by dotted line indicates a many to zero or one relationship. Whereas, the black circle followed by a solid line indicates a many to one relationship [76].Back to article page