In many cases, the two modules that are mapped by means of a datamapping, have a lot of attributes and/or relations in common.
This article describes how to generate a datamapping, that automatically maps common attributes and relations.
In this how to: |
Example
The example used concerns two modules, from which the ERD's are shown below.
Module Career
| Module Reporting
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In the module Career the entity Job has an attribute Company and in the module Reporting there is an attribute Job.Employer.Furthermore, The module Career has entity Course, the module Reporting does not contain this entity. |
Generate datamapping
Datamappings are part of a configuration module. See Data mapping on how to create a datamapping.
To make sure that
- the datamappings for all attributes from
Person, - the datamappings for all common attributes from
Joband - the datamappings for the relation
Person.HasJobs
are automatically generated, simply press the button Generate as shown below.
After pressing the button, the screen will alter slightly:
Below the generated mapping is shown:
Career > Reporting
| Reporting > Career
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For the entity Person, all attributes are mapped in the datamapping from Career to Reporting.
Also the relation Person.HasJobs is mapped automatically.
In entity Person, all attributes except the attribute Employer are mapped.
Re-generate the datamapping
The generate button can also be used after the initial datamapping. To illustrate this, we use the following scenario:
The datamapping for the attribute |
Before pressing the Generate button again, the datamapping is as follows.
After pressing the Generate button once more, the datamapping is as shown below.
In conclusion:
A datamapping can be generated over and over again:
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