What You Give Up With a Free Database Tool
For backend developers who weigh a free vs paid database tool; you know SQL and have used a database client before.
On this page
You can open, read and query a database without paying for anything. What a free tool takes away is the work that has to last. DbSchema Community Edition connects to your database, reverse-engineers the schema, draws the diagram and runs SQL for free. It can't save the design to a file, synchronize schemas or document a full schema. Those are Pro features.
In short
A free database engine limits how large the database can grow. A free database tool limits what you can keep, share and deploy. DbSchema Community covers connecting, reverse-engineering, diagrams and the SQL editor; Pro adds the saved model, schema synchronization, documentation and the data tools.
Key takeaways
- SQL Server 2025 Express stops at 50 GB per database and Oracle Database Free at 12 GB of user data. PostgreSQL sets no database size limit.
- DbSchema Community Edition is free for any use and has no end date.
- After the 15-day trial, Community can't open saved project files. The files stay on your disk and open again with a licence.
- Pro costs 294.00 USD once, with a year of updates. Further updates cost 75.00 USD a year and are optional.
Free engines and free tools limit different things
Two different things can be free: the database engine and the software you work on it with. The engine decides how much data you can store and how much hardware it may use. Your database software decides what you can do with the schema: save it, compare it, document it and share it.
The two are easy to mix up. A free engine such as PostgreSQL doesn't make your tooling free. A free client doesn't lift an engine's size cap either. Check each layer on its own before your team builds on it.
What the free database engines leave out
The free tiers of commercial engines cap size and hardware. Open-source engines set no such cap, but you run and back them up yourself.
| Free engine | Largest database | Compute | Memory |
|---|---|---|---|
| SQL Server 2025 Express | 50 GB per database | Lesser of 1 socket or 4 cores | 1,410 MB buffer pool |
| Oracle Database Free | 12 GB of user data | 2 CPUs for foreground processes | 2 GB of RAM |
| PostgreSQL | Unlimited | No licence limit | No licence limit |
Microsoft's SQL Server 2025 editions page[1] lists 50 GB as the largest relational database in Express. The same page limits an Express instance to the lesser of one socket or four cores.
Oracle's Database Free FAQ[2] gives its limits as "2 CPUs for foreground processes", "2GB of RAM" and "12GB of user data on disk". The PostgreSQL limits appendix[3] lists database size as "unlimited".
MySQL Community Edition is free under the GNU General Public License, version 2. The catch is distribution. Oracle's MySQL licence terms for OEMs and ISVs cover vendors that ship MySQL inside commercially licensed software. If such a vendor doesn't want to publish its own source under the GPL, it must sign a commercial licence with Oracle.
What the free DbSchema Community Edition covers
DbSchema Community Edition is "Free Forever, for any use", says the DbSchema pricing page. It comes from the same installer as Pro and Architect, and every download starts with a 15-day trial of all features.
Community covers what you need to read a database and change it by hand. You connect to any supported database, reverse-engineer the schema and get an interactive diagram. You create and edit tables and columns in that diagram, and you run queries in the SQL editor with autocompletion.
That is enough to inspect a database you inherited or to check a foreign key. The full tour of the free edition is in What a Free Database Design Tool Can Actually Do.
What you give up in DbSchema Community
DbSchema shows the list itself when the trial ends. We read the dialog from the installed DbSchema 10.5.2 app on 25 October 2026:
The 15-day trial is over, and DbSchema switched to the free Community Edition.
You can keep connecting to databases and editing SQL, but these Architect and Pro features are now disabled:
- Save the Design Model to file and share it with the team using Git
- Schema synchronization and migration scripts
- Interactive HTML5 documentation
- Relational Data Editor and Query Builder
- Data Generator
The biggest loss is the model file. In Pro, DbSchema saves your design to a project file that you can keep in Git. In Community the design lasts only as long as the session.
The pricing page states the consequence: after the trial, Community "cannot open saved project files". Your files stay on your computer, and they open again once you register a licence.
Most other Pro features build on that file. Schema synchronization compares the saved model with a live database and generates the migration script. Without a saved model, you have nothing to compare.
Documentation is limited too. The schema documentation page says Community documents a diagram of up to 12 tables, with "DbSchema Trial" across the image. Our 14-table PostgreSQL 16 demo schema is already past that limit. Pro documents any diagram as HTML5, PDF or Markdown.
The data tools are Pro features as well. In Pro, DbSchema builds queries with the mouse in the visual query builder and browses rows across related tables in the Relational Data Editor. It also fills tables with the data generator and loads CSV, XML or XLS files with the data importer.
If 15 days aren't enough to decide, the same dialog offers a free 2-week trial extension from the Customer Area on dbschema.com.
What other free database tools leave out
Other free tools put their limits in different places. These are the limits their vendors state, checked in October 2026.
| Free tier | What it leaves out |
|---|---|
| DbSchema Community | Free for any use; connects to and reverse-engineers live databases, MongoDB included; no table cap stated |
| DataGrip free licence | Non-commercial use only |
| DBeaver Community | No MongoDB driver; DBeaver ships it in Lite, Enterprise and Ultimate only |
| Hackolade Community | No forward or reverse engineering; 50 objects per model |
| DrawSQL Free | Public diagrams only, up to 15 tables |
| Lucidchart Free | 3 editable documents with 60 shapes each |
So the question for each free tier is the same. Does it connect to your engines, may you use it at work, and how large a schema does it accept? DbSchema Community answers yes to the first two and states no table cap.
What the paid DbSchema editions cost
The DbSchema pricing page lists these business prices on 25 October 2026, in US dollars plus taxes. You pay in your own currency at checkout.
| Edition | One-time | Monthly | Updates after year one |
|---|---|---|---|
| Pro | 294.00 USD | 29.40 USD | 75.00 USD a year |
| Architect | 470.40 USD | 47.04 USD | 120.00 USD a year |
| AI Assistant add-on | Not sold | 9.00 USD | Not applicable |
A perpetual licence keeps the version you bought and every release from its first year. After that, updates are optional. We read the renewal screen in the DbSchema 10.5.2 app: your licence and that version "keep working after the expiration, nothing turns off".
The monthly plan includes every update, and the pricing page says perpetual "costs the same as 10 months of the subscription".
Licences are per developer. You can install DbSchema on two computers and use one at a time; only floating licences are shared by a team.
Architect adds logical and conceptual design. A Pro licence upgrades to Architect for the price difference, 176.40 USD. The AI Assistant is a separate subscription that works with Community, Pro and Architect; Pro and Architect can also run it with your own key. For team purchases, see Which Database Tool Edition a Team Actually Needs.
When the free tier is enough
Stay on Community while your work starts and ends in a session. That covers reverse-engineering a database you inherited, reading its relationships and running queries against it.
Move to Pro when the design has to outlive the session. That is the case when you keep the model in Git, deploy changes with migration scripts, hand documentation to a colleague or browse data across tables. Whether to pay once or monthly is a separate question, covered in Perpetual or Subscription for Database Tooling.
Download DbSchema and reverse-engineer your own database in the free Community Edition. During the 15-day trial, save the model to a file and run a schema synchronization against your database. Both are Pro features, and the trial shows you whether you need them.
Frequently asked questions
Can I use DbSchema Community at work?
Yes. The pricing page says Community is free forever, for any use, and the download page says no registration is required.
Does DbSchema Community connect to MongoDB?
Yes. Community includes every supported database engine, and DbSchema supports MongoDB next to the relational engines.
What happens when the free update year of a perpetual licence ends?
The licensed version keeps working. A renewal, 75.00 USD a year for Pro, gives you the newer releases and technical support for another year.
Sources
Find out what the free edition already gives you
DbSchema Community reverse-engineers any supported database into an interactive ER diagram at no cost, and the same installer runs the Pro features as a 15-day trial.
