Database Documentation Generator
Auto-generate clear docs for tables, columns, and keys
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When someone new asks what the status column on your orders table actually means, where do you point them? Most teams point at the schema and hope. The columns are visible, the meaning is not. The Database Documentation Generator turns a schema you paste in into readable notes: what each table holds, how the tables connect, and what that odd column is for.
Short answer: The Database Documentation Generator is a free AI tool that reads a schema, a set of CREATE TABLE statements or a written description and returns plain English documentation of your tables, columns, keys and relationships.
What is Database Documentation Generator?
It is a writing tool for databases. You supply the structure, it supplies the words. The Database Documentation Generator never connects to a server and never reads a live database, so it documents exactly what you paste into the prompt box. The result reads like a data dictionary: table by table, column by column, with keys and indexes described in sentences rather than in DDL.
Table By Table Notes
Each table gets a purpose line and a column list with types, keys and what the field is for.
Relationships In Words
Foreign keys turn into sentences: which table owns which, and which rows disappear with their parent.
Written For The Next Person
The draft is aimed at whoever touches the schema next, not at the person who already knows it.
Why Schema Notes Never Get Written
Nobody plans to leave a database undocumented. It simply loses to every other task, week after week, until the person who designed it moves on. The job is dull rather than hard, which is why handing the first pass to a tool works.
| Doing it by hand | With the generator |
|---|---|
| Read forty CREATE TABLE statements and write each one up | Paste the DDL and correct a draft that already covers the obvious parts |
| Column meanings live in one person's memory | The gaps appear in writing, where a colleague can fill them |
| The document goes stale after the next migration | Regenerate from the new schema in a minute |
Important The draft describes what the schema says, not what your application does with it. A column called status is documented as a status column. Only you can add that 3 means refunded.
How Does Database Documentation Generator Work?
Paste the structure first. CREATE TABLE statements, a schema dump, an ORM model file or a written list of tables all work:
CREATE TABLE orders (
id BIGINT PRIMARY KEY,
customer_id BIGINT NOT NULL,
status VARCHAR(20) NOT NULL,
placed_at DATETIME NOT NULL
);Then open Advanced options. This panel is shared with the other database tools, so a few values belong to a query builder rather than to documentation. The ones worth setting are Database for your engine, Output Type set to Schema or Data Model, and Format set to Explained for prose or Table for a grid. Complexity starts on Standard, which suits most schemas. Leave Add Comments, Include Indexes and Add Constraints on, since those are the details a reader needs. Pick a model from the selector, press Generate, then copy the notes or download them as HTML.
From Generated Draft To Team Document
- Read it beside the real schema and fix any meaning the model guessed.
- Add what DDL cannot show: which service writes to each table, retention rules, the enum values that matter.
- Paste it into your wiki or the repository README, next to the migrations.
- Regenerate after any migration that adds, renames or drops a column.
If a table needs an example query beside its notes, the SQL Generator takes the same plain English description and hands back SQL.
Free access is the whole idea at EizTools: no account, no credit counter and no paid tier on the tools. You pick a model from the selector for each generation, then copy or download the result as TXT, Word or HTML. The Database Documentation Generator sits with the rest of the Coding Tools, beside the database, DevOps and debugging tools.
Frequently Asked Questions
Can it read my live database?
No. Nothing here connects to a server or runs a query. Paste your schema, a dump or a description into the prompt box, and the documentation is written from that text alone.
What is the best thing to paste in?
The CREATE TABLE statements for the tables you care about. Failing that, an ORM model file or a written list of tables and fields. More structure going in means more specific documentation coming out.
Does the Database setting change the output?
It does. Set Database to your own engine, PostgreSQL for instance, rather than leaving it on Auto. That keeps the type names and the index wording right instead of generic across every engine.
Can I get a table layout instead of paragraphs?
Yes. Set Format to Table and the columns come back as a grid you can drop into a wiki page. Explained gives you prose instead, which reads better in a handover document.
Documentation is the part of a database everyone wants and nobody schedules. Getting a full draft in one pass changes that, as long as you read it properly and add the meanings only your team knows. Paste your schema in and read the first version.
Sabir Bepari
Founder of EizTools and a passionate AI enthusiast dedicated to building practical, user-friendly AI tools that simplify everyday tasks.
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