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Modifying data type mapping preferences
There is extensive support for the Informix data types when you are working at the physical model level, including BYTE, TEXT, NCHAR, NVARCHAR, LVARCHAR, BOOLEAN, INTERVAL, DATETIME in addition to the other basic types as shown in the Appendix.
You can set up the type conversions to be used when going from logical to physical models and physical to logical models by configuring them in the IDA preferences for a particular database. You can also add to the list if you find something is missing from the pre-existing list.
- Bring up the Preferences window from the top toolbar by going to Window > Preferences.
- Navigate the tree by expanding the Data Management section (Figure 32), then going to Transform > Data Type Map, and then click on Logical to Physical . This brings up a set of type mappings on the right side.
- Select Informix from the Database vendor type drop-down list, and then click in the Physical Data Type field to change the mapped-to data type. For this example, modify the default TIMESTAMP mapping to map to a physical data type of DATETIME YEAR TO SECOND then click on Apply and OK. This will be used for all future type mappings.
Figure 32. Setting up preferences
Table of contents
- Before you start
- Using IDA with Informix Dynamic Server
- Reverse engineering models from the database
- What can you do now?
- Starting top down from logical models
- Enhancing your model then syncing it up with the physical model
- Modifying data type mapping preferences
- Enforcing consistency by attaching domain elements to your model
- Conclusion
- Appendix: Model elements support for Informix servers
- Resources
- About the authors
