On the Number of Keys of a Relational Database Schema
Дата
Авторы
Wastl,Ralf
Journal Title
Journal ISSN
Volume Title
Издатель
Journal of Universal Computer Science
Аннотация
Описание
We introduce an inference system for deriving all keys of a relation schema. Then we show that the number of keys of a relation schema R = is bounded by .
Ключевые слова
relation schema , keys , inference system