Add TheTool database migration documentation

db/README.md

@@ -0,0 +1,54 @@
+# TheTool Database Migrations
+## Introduction
+
+This project utilizes Phinx for Database Migrations
+
+## Table of Contents 
+- [Initializing Phinx](#Initializing) 
+- [Creating Migrations](#creating-migrations) 
+- [Migrating / Rolling Back](#migrating--rolling-back) 
+- [Documentation](#documentation) 
+
+## Initializing
+
+To start using Phinx for database migrations, you first need to initialize Phinx and set up your configuration. Run the following command in your project directory:
+
+```bash
+vendor/bin/phinx init
+```
+
+After initialization, add two environments: `thetool` and `thetool_addressdb` to your Phinx configuration to ensure it functions correctly with TheTool's database setup.
+
+## Usage
+### Creating Migrations
+
+To create a new database migration, use the command below
+
+Custom Template -t : `db/template/migrate.up_down.template`  
+Replace `{MIGRATION_NAME}` : Example `AddNewTable`
+
+```bash
+vendor/bin/phinx create {MIGRATION_NAME} -t db/template/migrate.up_down.template
+```
+
+A new migration file will be created in `db/migrations`
+
+### Migrating / Rolling Back
+
+Use the following command to apply the migrations.
+
+Use `-t={TARGET_TIMESTAMP}` to go to a specific migration target  
+Use `--dry-run` to simulate the Migratio
+
+```bash
+vendor/bin/phinx migrate [-t={TARGET_TIMESTAMP}] [--dry-run]
+```
+
+Use the following command to undo the migrations.
+
+```bash
+vendor/bin/phinx rollback [-t={TARGET_TIMESTAMP}] [--dry-run]
+```
+## Documentation
+
+For more detailed information on using Phinx, visit the [Phinx documentation](https://book.cakephp.org/phinx/0/en/intro.html) .