The optional deletePropertiesIfAbsent argument enables you to specify whether you want to delete properties that exist in the JADE database but are not defined in the incoming schema file.
The value of this argument defaults to the value of the deleteIfAbsent argument. For example, if you want to delete the classes, interfaces, and methods in the JADE database that are not in your schema file but you want to retain existing properties that are not in the incoming file, specify:
schemaFile=d:\jade\scm\test.scm ddbFile=d:\jade\scm\test.ddb deletePropertiesIfAbsent=false deleteIfAbsent=true