abstract ;;Quote: the molecular semantics for a database searches for meaningful units larger than n-ary relationships

abstract+ ;;Quote: the atomic semantics for a database searches for meaningful units that are as small as possible

409 ;;Quote: RM/T augments the relational model with system-assigned surrogates for entities

409+ ;;Quote: the relational model uses user-defined and user-controlled primary keys as unique and permanent identifiers

409+ ;;Quote: problems with user-controlled keys as permanent surrogates: can be changed, different keys for same entity, entities without keys

409+ ;;Quote: with user-controlled keys, an equi-join on common key values may be different that a join on common entities

411 ;;Quote: RM/T uses characteristic and associative types to define cartesian aggregations, unconditional generalizations, and alternative generalizations

411+ ;;Quote: in RM/T, characteristic entity types describe entities of some other type; subordinate role

411+ ;;Quote: in RM/T, associative entity types interrelate entities of other types; superordinate role

411+ ;;Quote: in RM/T, kernel entity types or sub-types are neither characteristic nor associative types

411 ;;Quote: RM/T inner kernel entity types are not subtypes of any other type; independently defined

411+ ;;Quote: entities of a subtype of an entity type are necessarily entities of the parent type

412 ;;Quote: RM/T has nonentity associations for relations which are not themselves objects; a single n-ary relation without characteristic entities