Host Programmer's Reference Guide
About this Guide
To use the Databridge application programming interface (API), you must have ALGOL programming experience. In addition, you should be thoroughly familiar with:
- Standard operations for Unisys® MCP-hosted servers
- Data Management System II (DMSII) databases and Data And Structure Definition Language (DASDL)
- Transferring files between your host and the system that uses the replicated DMSII data
- The Databridge host software
Note
This guide does not define DBEngine, define DBSupport, nor explain how Databridge operates.
See the Databridge Host Administrator's Guide for details about Databridge operations.
Conventions
The following conventions and terms may be used in this guide.
| This convention or term | Is used to indicate this |
|---|---|
| menu > sub menu 1 > sub menu 2 ... > menu item (item) | This font style/color shows mouse-clicks in the order required to access a specific function, window, dialog box, etc. The greater than symbol > indicates the next item to click in the series. The parentheses ( ) indicate the setting, option, or parameter being discussed. Note the font style reverts back to normal. |
this type style |
text that you type filenames and directory names onscreen messages |
| italic | italic variables emphasis document titles |
| square brackets ( [ ] ) | optional items in a command For example, [ true | false ]. (Do not type the brackets.) |
pipe ( | ) |
a choice between items in a command or parameter. When enclosed in braces ( { } ), the choice is mandatory. |
| UPPERCASE | DMSII data set and data item names |
| CAUTION | The Caution note indicates that there is a possibility of losing data or corrupting files. When you see a Caution note, follow the instructions carefully. |
| MCP server host mainframe (term) | Unisys ClearPath NX, LX or A Series mainframe |
| DBEngine (term) | Databridge Engine |
| DBEnterprise (term) | Databridge Enterprise Server |
| DBServer (term) | Databridge Server |
Abbreviations
The following abbreviations are used throughout this guide and are provided here for quick reference.
| Abbreviation | Name |
|---|---|
| AA | Absolute Address |
| ABSN | Audit Block Serial Number |
| AFN | Audit File Number |
| API | Application Programming Interface |
| DASDL | Data and Structure Definition Language |
| DMSII | Data Management System II |
| IDX | Index |
| IPC | Inter-Process Communications |
| MCP | Master Control Program |
| RPC | Remote Procedure Call |
| SEG | Segment |
| WFL | Work Flow Language |
Related Documentation
When using Databridge, you may need to consult the following resources.
Databridge product documentation
You can access the Databridge documentation from these locations:
-
The DOCS folder on the Databridge installation image contains PDF guides for installation, error codes, and administrator guides for each Databridge product.
-
Databridge Documentation (HTML and PDF). This site contains the Databriged documentation for current and previous version.
-
Databridge Support Resources page. Contains links to documentation, Knowledge Base articles, and other information.
-
Documentation for Databridge Enterprise Server and the Databridge Client Console is also available from the Help menu. A modern browser is required for viewing this documentation.
Unisys MCP server documentation
If you are not completely familiar with DMSII configuration, refer to your Unisys documentation.