DBMS class. Please answer these questions

ai a weak relationship type? Contrast a condition-precedent weak relationship type wha with an event-precedent weak relationship type. t is a composite relationship type? 3 W s required in order to decompose a ternary and higher-order relationship type in Whaaration for mapping to a logical schema? What is the cardinality ratio of each ot the set of binary relationships? required to decompose a cluster entity type in preparation for mapping to a logica resulting schema