Systems Management
VSI Data Dictionary (VDD)
Product Overview
VDD (VSI Data Dictionary) is a VSI-developed application that enables organizations to modernize their OpenVMS environments without being held back by legacy data dictionary dependencies.
Many OpenVMS applications — particularly those built around Oracle Rdb — rely on a common data dictionary to store and share record and field definitions across the entire application stack. VDD provides those services as a fully self-sufficient, independently developed VSI solution, ensuring that the applications and tools depending on a data dictionary continue to function on x86 without requiring a complete rewrite of your applications or database migration as a prerequisite.
As businesses move their systems to x86 hardware, all at once or gradually while keeping some older Integrity servers running, VDD removes a critical blocker in that process. It removes CDD dependency and works seamlessly with Datatrieve and TDMS (both ported for x86), forming a complete, production-ready data management stack for migrated OpenVMS environments.
VDD is a work in progress. VSI is actively developing the features needed to support specific customer environments and applications, reviewing each customer's CDD-dependent tools and prioritizing the functionality required to get their stack fully operational on x86.
Latest Version
| Alpha | Integrity | X-86 |
|---|---|---|
| E1.2-01 (Field Test) | E1.2-01 (Field Test) |
Features
- Data dictionary services delivered as a native VSI application, with no dependency on third-party software.
- Enables x86 migration by resolving the data dictionary dependency that previously prevented some OpenVMS x86 applications from working together with select legacy products, including those built around Oracle Rdb, where record and field definitions need to remain accessible and consistent across the stack.
- Works with Datatrieve (DTR), VSI's x86 port of the classic OpenVMS query and reporting tool, which relies on common data dictionary definitions to describe the data sources it queries and reports on.
- Works with TDMS, VSI's x86 port of the OpenVMS terminal forms and data management system, which uses common data dictionary definitions for its screen and data structure descriptions.
- Supports mixed environments where some systems have already moved to x86 while others still run on Integrity hardware, so teams can migrate step by step rather than all at once.
- Behavioral compatibility with existing data dictionary workflows, allowing applications and teams to continue operating without significant rework or retraining.
- Supported and maintained by VSI, with a clear roadmap and ongoing support options in case a specific customer case requires adaptation or improvements.
Get a license
Most non-Open Source products require a valid license to operate. If you need to get a license for a product or OpenVMS itself, please look at the page describing the possible options.
Migrate to x86
OpenVMS is now available for x86/64 architecture, offering a reliable and up-to-date option to run your software in the future.
We are ready to give you all the information needed to evaluate the migration project, move your solutions to x86, and start using them in a working environment.