> ## Documentation Index
> Fetch the complete documentation index at: https://docs.serial.okos.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Versions

> An in-depth look at the structure and purpose of the `versions` table in the Serial database

## Introduction to the Versions Table

The Versions table is designed to track different versions of the application. This table plays a crucial role in maintaining a historical record of application releases and their associated metadata.

## Table Structure

The Versions table is structured to store comprehensive information about each application version. Here's a detailed breakdown of its columns:

| Column Name   | Data Type   | Constraints       | Description                                         |
| ------------- | ----------- | ----------------- | --------------------------------------------------- |
| id            | uuid        | primary key       | Unique identifier for each version record           |
| app\_version  | text        | not null          | The version number or identifier of the application |
| release\_date | text        | not null          | The date when the version was released              |
| environment   | text        | not null          | The environment for which the version is intended   |
| git\_commit   | text        | not null          | The Git commit hash associated with this version    |
| notes         | text        | nullable          | Additional notes or description about the version   |
| created\_at   | timestamptz | not null, default | Timestamp when the version record was created       |

## Usage and Functionality

The Versions table is designed to be a comprehensive log of application releases. Here are some key points about its usage:

1. **Version Tracking**: The table allows the system to keep track of all released versions of the application, including their release dates and associated Git commits.

2. **Environment Specificity**: By including an 'environment' column, the table can differentiate between versions released for different environments (e.g., development, staging, production).

3. **Auditing and Rollbacks**: The detailed information stored in this table can be crucial for auditing purposes or when needing to roll back to a previous version.

## Notes

* The table uses timestamptz for the 'created\_at' column, ensuring that timezone information is preserved.

* Row-level security is implemented on this table, allowing authenticated users to select records:

  ```sql
  CREATE POLICY "Enable read access for authenticated users" ON "public"."versions"
  AS PERMISSIVE FOR SELECT
  TO authenticated
  USING (true)
  ```

* The 'notes' column allows for additional context or changelog information to be stored with each version.

By leveraging the Versions table, the Serial application can maintain a detailed history of its releases, facilitating version control, auditing, and potentially enabling features like version comparison or rollback functionality.