Database Management System207910 marksQuality measures for relational schema design
What is a functional dependency? What are the four informal measures of quality for relational schema design? Explain.
What is a functional dependency? What are the four informal measures of quality for relational schema design? Explain.[10]
--- A functional dependency (FD) is a constraint between two sets of attributes in a relation. It describes the relationship between attributes in a relational schema. Formally, a functional dependency is denoted as: $$X \rightarrow Y$$ This is read as "X functionally determines Y" or "Y is funct...