# Build-In Sqlite3 Database Adapter Schema

## Content

## Sql

```auto
CREATE TABLE IF NOT EXISTS documents (
  id TEXT PRIMARY KEY,
  type TEXT NOT NULL,
  version INTEGER NOT NULL,
  snapshot_version INTEGER NOT NULL
);

CREATE TABLE IF NOT EXISTS operations (
  doc_id TEXT NOT NULL,
  version INTEGER NOT NULL,
  operation TEXT NOT NULL,
  PRIMARY KEY (doc_id, version),
  FOREIGN KEY (doc_id) REFERENCES documents (id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS snapshot_fragments (
  doc_id TEXT NOT NULL,
  fragment_id TEXT NOT NULL,
  data TEXT NOT NULL,
  PRIMARY KEY (doc_id, fragment_id),
  FOREIGN KEY (doc_id) REFERENCES documents (id) ON DELETE CASCADE
);
```

## Schema

| **Table Name** | **Column Name** | **Data Type** | **Description** |
| ---------- | ----------- | --------- | ----------- |
| @rows=4:documents | id | TEXT | Unique identifier for the document |
| version | INTEGER | Version number of the document |
| snapshotVersion | INTEGER | Snapshot version number |
| type | TEXT | Type of the document |
| @rows=3:ops | roomId | TEXT | Room ID |
| version | INTEGER | Version of the operation |
| data | TEXT | Data related to the operation |
| @rows=3:fragments | roomId | TEXT | Room ID |
| fragmentId | TEXT | Unique identifier for the fragment |
| data | TEXT | Data related to the fragment |