What does a Enity relationship diagram do?

Illustrate the relationship between entities

Its information that needs to be stored

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1What is foreign key?
1. AWhere every database has something to recognise it
2. BTo link tables together and create a relationship.
2Referential integrity uses foreign key to ensure there is no orphan records
1. ARichtig
2. BFalsch
3More than one person can use a local database
1. ARichtig
2. BFalsch
4Why isn't a flat database good?
1. AIt takes a long time
2. BIts easy to make mistakes
5On a network database you cannot add, edit or delete information
1. ARichtig
2. BFalsch
6How many users can use a local database?
1. AOne
2. BMany
7What does a Enity relationship diagram do?
1. AIts information that needs to be stored
2. BIllustrate the relationship between entities