To transform an attribute into a column, select the Persistent option on the Detail tab of its property sheet.
Persistent attributes can have simple data types or complex data types:
-
Simple Data Type - such as int, float, String, Date etc.
Each persistent attribute is transformed into one column. Its data type is converted into an internal standard data type, which is then mapped to the appropriate data type in the DBMS. These transformations are controlled by the table of values in the AMCDDataType entry in the Data Type folder of the DBMS definition:
- Complex Data Type - based on a classifier. The transformation depends on the persistent settings of the classifier. The classifier is generally used as a value type class (see Value type transformation).
You can also customize the code of the generated data types in the Code box of the Persistent groupbox. You can also customize the code of the generated columns.