... schema, 24 models, 4 two-dimensional tables of, 8 Database, 8, 54, 82, 136, 138, 166, 175, 233 applications, 187 creation, 77 definitions, 25 design of, 4 evolution of, 141 mapped, ... entities, 138- 140 multiple relationships, 149 -150 recursive relationships, 145 - 149 many-to-many recursive relationship, 149 one-to-many recursive relationship, 148 - 149 one-to-one recursive ... entities, 140 alternative ER notation for specifying structural constraints on relationships, 1 54 -155 attributes evolving into entities, 142 - 145 attributes of relationships, 1 34 -136 case...