| February 02, 2008 04:51:02 |
#1 |
| pal.amol |
Member Since: February 2008 Total Comments: 8 |
RE: Dimensional modelling vs Data modelling vs ER modelling
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Dimensional modelling sometimes mistaken as the ER modelling but no it is wrong, DM is just modelling which is more flexible for the user perspective.
In ER it is not mapped unlike DM for creating schemas and moreover it does not also act to convert normalize data in to denormalize form.
Basicalling aim of modelling data is for retrieving the data fast when user will be querying , so it happens in DM like star schema. |
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