DB2 OLAP Server Theory and Practices - ps-2
2. ? Concepts/Constructs in ER Approach and diagram o Cardinality vs. Participation ... Entity: An entity is an object which exists in our mind ... Q: How to choose the identifier of an entity type? E.g.. ... E.g. In an EMPLOYEE database, we want to describe information ... E.g. Managers decide which machine is assigned to. Télécharger DB2 OLAP Server Theory and Practices - ps-2 pdf
