Get a Visual Reference for a Legacy SQLBase System

Gupta SQLBase still powers client-server applications built decades ago. DbSchema connects through its JDBC driver, reverse-engineers the schema into an ER diagram, and produces the documentation a maintenance or migration project starts from.

An ER diagram for a database that probably never had one
Query and inspect data without a Centura-era client installed
Current-state HTML documentation as a migration-planning artifact
Compare server instances to expose undocumented structural changes

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DbSchema reverse engineering a Gupta SQLBase schema into an ER diagram

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The Application Outlived
Its Designers and Its Docs

SQLBase carried PC/LAN business applications through the 1990s — developed by Gupta Technologies, later maintained by Centura Software — and plenty of those systems still run in production today. The people who designed the schema moved on; whatever documentation existed left with them.

DbSchema rebuilds the missing picture from the database itself: tables, column types, and relationships on a diagram the maintenance or migration team can finally reason about.

Recover, Query & Plan
Around a SQLBase Schema

For teams maintaining a legacy system — or steering the move off it.

Reverse engineer the Gupta SQLBase catalog into a visual diagram

The Structure, Recovered

DbSchema reads the SQLBase catalog and displays table definitions, column types, and relationships — an immediate visual overview where no schema diagram ever existed.

Execute SQL against Gupta SQLBase from a modern editor

Queries Without Vintage Clients

Inspect data, validate migration scripts, and test how SQLBase handles specific data types and constraints — before replicating the schema on a modern target.

Design the migration target schema next to the SQLBase source

The Target Design, Side by Side

Design the migration-target schema in DbSchema alongside the SQLBase source, keeping old and new structures comparable through every stage of the project.

Migration Planning Starts
With a Document, Not a Login

Generate current-state HTML documentation of the SQLBase database — every table, column, and relationship, searchable in any browser. Analysts scoping a move to PostgreSQL or SQL Server work from the report while the aging server stays untouched; auditors and consultants read the same pages without a single login granted.

Explore the Documentation Tool

Current-state HTML documentation generated from a Gupta SQLBase database

SQLBase Connection Facts — Driver, URL, Prerequisites

Obtain the SQLBase JDBC driver from Centura Software, or a compatible third-party driver, and register the JAR in DbSchema's driver manager under Settings > Drivers. A connection needs the database name, which forms the URL jdbc:sqlbase:dbname.

Before connecting, confirm three things: the SQLBase server is running, the database name is registered in the server configuration, and the server's host is reachable on the configured port from the machine running DbSchema.

For a migration project that runs across months, the Pro edition's offline design model with Git versioning keeps a record of how the SQLBase schema looked at each stage. Driver setup details are on the SQLBase JDBC driver page.