A data warehouse is a type of computer database that is responsible for collecting and storing the information of a particular organization. The goal of using a data warehouse is to have an efficient way of managing information and analyzing data. In addition to a relational database, a data warehouse environment includes an extraction, transportation, [...]
|
||||||
|
A relationship is an association between several entities. A relationship set is a set of relationships of the same type. A relationship type R among n entity types E1, E2,….., En defines a set of associations or a relationship set among entities from these types. In ER diagrams, relationship types are displayed as diamond-shaped boxes, [...] |
||||||
|
Copyright © 2012 Learn Software Development - All Rights Reserved |
||||||
Recent Comments