How the Agent Works
- Install the DataMeans Agent on a system with Model 204 access
- Configure the connection to your Model 204 environment
- Select the schemas and tables to extract
- The Agent extracts your data and uploads it securely for conversion
Model 204 is a legacy database system developed by Computer Corporation of America, one of the oldest database systems still in limited use.
Why Agent Required
Model 204 runs on mainframe systems that cannot directly upload data to the web. The DataMeans Agent connects securely to your environment for extraction.
What You Can Extract
- Model 204 versions 2.x through 4.x
- Model 204 database files (internal Tables A through D)
- Table and record structures
- B-tree indexes
What You Get Out
DataMeans extracts your data into multiple modern formats:
| Output | Description |
|---|---|
csv/{TableName}.csv | One CSV file per table with all row data |
xlsx/{TableName}.xlsx | Excel workbook per table |
xls/{TableName}.xls | Legacy Excel format per table |
json/{TableName}.json | JSON array of records per table |
json/{TableName}.jsonl | Newline-delimited JSON (streaming-friendly) |
postgres.sql | PostgreSQL CREATE TABLE + INSERT statements |
schema/schema-graph.json | Relationship graph for visualization |
schema/er-model.json | ER model for diagram tools |
report.json | Structured extraction report |
report.md | Human-readable extraction summary |
How It Works
Agent availability: The DataMeans Agent is currently in development and not yet available for download. The steps below describe the planned workflow. To get notified when Model 204 support launches, reach out via our About page.
- Download and install the DataMeans Agent on a system with Model 204 access
- Configure connection to your database environment
- Select schemas and tables to extract
- The Agent extracts data and uploads securely to DataMeans
- Review and download your converted data
Planned Support
- Record structure extraction
- Index analysis
- Variable-length record handling
- B-tree recovery
Known Limitations
- Requires DataMeans Agent installation
- Very specialized format may require consultation
- Limited documentation available
Overview
Documentation coming soon.
This article will contain vendor-neutral technical documentation about the Model 204 database format, including:
- History and background
- File format specifications
- Data types and structures
- Version differences
- Technical references
To learn how to use this format with DataMeans, see the User Guide.
Not available for hosted uploads. This system is read over a direct database connection by the DataMeans Agent, which is still in development. Contact us to plan a migration.
Can I convert Model 204 databases with DataMeans today?
Not yet. Model 204 is not available for self-serve upload, and support is still in development. Get in touch and we'll tell you where it stands and help plan the migration.
What will DataMeans convert Model 204 databases to?
Once Model 204 is available, exports will match every other system we support: clean CSV, Excel, JSON & SQL, one file per table, with a structured report of exactly what was extracted.
Is my data secure?
Yes. Your files are encrypted in transit and at rest, and are automatically deleted once your conversion is complete. Your data is never sold, shared, or used for anything else.