A PTY file contains properties used by data models created with Rational Rose. It is similar to a .PRP properties file, but is not controlled and is used in single-user environments.
About IBM Rational Rose
Rational Rose is a product line of data modeling software developed by IBM. The software can be used for visual modeling, software development, and Web services design. Different Rational Rose applications include Rose Data Modeler, Rose Enterprise, Rose Technical Developer, and Rose Developer for Java, Unix, and Visual Studio.
File Format:
Proprietary file format used by IBM software.
File Usage:
Referenced by an application. Should not be opened manually.