- Data modelling terms
- Data elements
- From the data flow lines it is possible to identify the data
elements (items).
- Data exclusivity
- Ensuring equal values represent the same entity
(Exclusivity)
- Data keys
- Identify Primary and Secondary Keys (Involution)
- Data relationships
- Define Relationships (Cardinality)
- 1-1
- 1-Many
- Many-1
- Many-Many
- or Many
- 0 or Many to One
- Data stores
- Referential integrity (Optionality of
Association)
- References from one table to another are valid and accurate
[Rev: 04/02/99] © 4/2/1999 V/2-Com (Verhaart), P O Box 8415, Havelock
North, New Zealand.