in a data exchange regarding a burglary. If the relationships between these data components are not defined, it will be impossible for justice professionals to distinguish the personal information of the owner of the house from that of the person who burglarized it. The GJXDM utilizes data models to describe the relationships between the different "building blocks" included in an IEP. Data models link these different concepts together by the use of two types of relationships: “is_a” and “has_a.” The “is_a” type is used when one object or concept inherits characteristics from another type. The “has_a” relationship shows what kind of information an object has. In the example above, the burglar “is_a” person, while an investigating officer “has_a” Employment Person ID. Reuse Repository The true power of the GJXDM lies in its reuse repository, known as the IEPD Clearinghouse. Whenever a data dictionary and data model are created for an IEP, they are packaged within Information Exchange Package Documentation (IEPD). These IEPDs can be utilized as standards or templates for the creation of IEPs. For example, if an agency created an IEPD for an arrest filing, they could submit the IEPD to the Clearinghouse, where it could be downloaded by any agency wishing to facilitate electronic arrest filings. This saves agencies a great deal of time and resources as they don't have to create an arrest filing data dictionary and data model from scratch. Version 3.0.3 In September, 2005, the Office of Justice Programs (OJP), together with the Global Justice Information Sharing Initiative (Global), officially issued a newer version of the Global Justice Extensible Markup Language (XML) Data Model (Global JXDM) to the justice community, Version 3.0.3. This "maintenance" release of the Version 3.0 Global JXDM series is enhanced to increase the ability of justice and public safety communities to share justice information at all levels laying the foundation for local, state, and national justice interoperability. Some of the enhancements incorporated into Version 3.0.3 include the addition of new components that are compatible with previous version 3.0.2, new "sequenceID" values for "PersonNameType" sub-elements to assign an alternate ordering independent of the physical XML sequence, and an updated Frequently Asked Questions (FAQs) resource that incorporates content from the Global JXDM Version 3.0 Reference Notes along with added FAQs. An important feature is that the Global JXDM, Version 3.0.3, is forward compatible with all XML instances written for Global JXDM, Version 3.0.