diff --git a/docs/configuration.md b/docs/configuration.md
index 90e76da..17b615c 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -167,11 +167,12 @@ ssl:
 
 ### Database Configuration
 
-File metadata storage settings.
+File metadata storage settings. Armor supports SQLite, PostgreSQL, and MySQL databases.
 
+#### SQLite Configuration (Default)
 ```yaml
 database:
-  dialect: "sqlite"                   # Database type (sqlite only)
+  dialect: "sqlite"                   # Database type
   storage: "/var/lib/armor/database/armor.db"
   logging: false                      # Enable SQL query logging
   pool:
@@ -180,6 +181,70 @@ database:
     idle: 10000                      # Idle timeout (ms)
 ```
 
+#### PostgreSQL Configuration
+```yaml
+database:
+  dialect: "postgres"
+  host: "localhost"
+  port: 5432
+  database: "armor_db"
+  username: "armor_user"
+  password: "armor_password"
+  logging: false
+  pool:
+    max: 10
+    min: 2
+    idle: 30000
+```
+
+#### MySQL Configuration
+```yaml
+database:
+  dialect: "mysql"
+  host: "localhost"
+  port: 3306
+  database: "armor_db"
+  username: "armor_user"
+  password: "armor_password"
+  logging: false
+  pool:
+    max: 10
+    min: 2
+    idle: 30000
+```
+
+#### PostgreSQL Configuration
+```yaml
+database:
+  dialect: "postgres"
+  host: "localhost"
+  port: 5432
+  database: "armor_db"
+  username: "armor_user"
+  password: "armor_password"
+  logging: false
+  pool:
+    max: 10
+    min: 2
+    idle: 30000
+```
+
+#### MySQL Configuration
+```yaml
+database:
+  dialect: "mysql"
+  host: "localhost"
+  port: 3306
+  database: "armor_db"
+  username: "armor_user"
+  password: "armor_password"
+  logging: false
+  pool:
+    max: 10
+    min: 2
+    idle: 30000
+```
+
 ### Swagger UI Configuration
 
 API documentation interface settings.
@@ -276,6 +341,14 @@ export ARMOR_SSL_KEY_FILE=/path/to/key.pem
 export ARMOR_SSL_CERT_FILE=/path/to/cert.pem
 
 # Database configuration
+export ARMOR_DATABASE_DIALECT=postgres
+export ARMOR_DATABASE_HOST=localhost
+export ARMOR_DATABASE_PORT=5432
+export ARMOR_DATABASE_NAME=armor_db
+export ARMOR_DATABASE_USERNAME=armor_user
+export ARMOR_DATABASE_PASSWORD=armor_password
+
+# SQLite specific
 export ARMOR_DATABASE_STORAGE=/custom/path/database.db
 
 # Security configuration
@@ -345,10 +418,29 @@ Armor validates configuration on startup and will:
 - Test with basic auth: `curl -k -u admin:admin123 https://localhost/`
 
 **Database Issues**
+
+**SQLite Issues**
 - Check SQLite file permissions: `sudo chown armor:armor /var/lib/armor/database/`
 - Verify disk space available
 - Test database: `sqlite3 /var/lib/armor/database/armor.db .tables`
 
+**PostgreSQL Issues**
+- Check connection: `psql -h localhost -U armor_user -d armor_db`
+- Verify schema ownership: `psql -d armor_db -c "\dn+"`
+- If ENUM creation fails: `sudo -u postgres psql -d armor_db -c "ALTER SCHEMA public OWNER TO armor_user;"`
+- Check PostgreSQL service: `sudo systemctl status postgresql`
+
+**MySQL Issues**
+- Check connection: `mysql -h localhost -u armor_user -p armor_db`
+- Verify user privileges: `SHOW GRANTS FOR 'armor_user'@'localhost';`
+- Check MySQL service: `sudo systemctl status mysql`
+
+**General Database Issues**
+- Verify database dependencies are installed (`pg` for PostgreSQL, `mysql2` for MySQL)
+- Check database service is running
+- Verify network connectivity and firewall settings
+- Review Armor logs: `sudo journalctl -u armor -f`
+
 ---
 
 For more help, see [Support Documentation](../support/) or [open an issue](https://github.com/STARTcloud/armor_private/issues).
diff --git a/docs/guides/getting-started.md b/docs/guides/getting-started.md
index 2445a3d..3adbc30 100644
--- a/docs/guides/getting-started.md
+++ b/docs/guides/getting-started.md
@@ -24,7 +24,8 @@ This guide will walk you through setting up Armor for the first time, from insta
 Before starting, ensure you have:
 
 - **Node.js 22+** - Required for running Armor server
-- **SQLite3** - For file metadata storage
+- **Database** - SQLite3 (default), PostgreSQL, or MySQL for file metadata storage
+- **Database Dependencies** - `pg` package for PostgreSQL, `mysql2` for MySQL (install via npm)
 - **OpenSSL** - For SSL certificate generation
 - **Network Access** - For HTTPS file serving
 
@@ -55,7 +56,7 @@ cd armor_private
 npm ci
 
 # Configure
-cp config.yaml.example config.yaml
+cp dev.config.yaml config.yaml
 # Edit config.yaml with your settings
 
 # Start server
diff --git a/docs/guides/installation.md b/docs/guides/installation.md
index 991cf3f..9f00d0b 100644
--- a/docs/guides/installation.md
+++ b/docs/guides/installation.md
@@ -197,6 +197,92 @@ ssl:
   cert_file: "/etc/letsencrypt/live/armor.yourdomain.com/fullchain.pem"
 ```
 
+## Database Setup
+
+Armor supports SQLite (default), PostgreSQL, and MySQL databases.
+
+### SQLite (Default)
+
+No additional setup required. SQLite database is created automatically.
+
+```yaml
+database:
+  dialect: "sqlite"
+  storage: "/var/lib/armor/database/armor.db"
+  logging: false
+```
+
+### PostgreSQL Setup
+
+#### Install Dependencies
+
+```bash
+# Add PostgreSQL support
+npm install pg
+```
+
+#### Create Database and User
+
+```bash
+# Create database and user
+sudo -u postgres createdb armor_db
+sudo -u postgres createuser armor_user
+sudo -u postgres psql -c "ALTER USER armor_user WITH PASSWORD 'armor_password';"
+sudo -u postgres psql -c "GRANT ALL PRIVILEGES ON DATABASE armor_db TO armor_user;"
+
+# Critical: Set schema ownership for ENUM creation
+sudo -u postgres psql -d armor_db -c "ALTER SCHEMA public OWNER TO armor_user;"
+```
+
+#### Configure Armor
+
+```yaml
+database:
+  dialect: "postgres"
+  host: "localhost"
+  port: 5432
+  database: "armor_db"
+  username: "armor_user"
+  password: "armor_password"
+  logging: false
+```
+
+### MySQL Setup
+
+#### Install Dependencies
+
+```bash
+# Add MySQL support
+npm install mysql2
+```
+
+#### Create Database and User
+
+```bash
+# Connect to MySQL as root
+mysql -u root -p
+
+# Create database and user
+CREATE DATABASE armor_db;
+CREATE USER 'armor_user'@'localhost' IDENTIFIED BY 'armor_password';
+GRANT ALL PRIVILEGES ON armor_db.* TO 'armor_user'@'localhost';
+FLUSH PRIVILEGES;
+EXIT;
+```
+
+#### Configure Armor
+
+```yaml
+database:
+  dialect: "mysql"
+  host: "localhost"
+  port: 3306
+  database: "armor_db"
+  username: "armor_user"
+  password: "armor_password"
+  logging: false
+```
+
 ## Service Configuration
 
 ### DEBIAN/Ubuntu (systemd)
diff --git a/docs/index.md b/docs/index.md
index fa3e1a5..73dcb97 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -39,7 +39,7 @@ graph TD
     B -- File Operations --> C[File System];
     B -- Real-time Updates --> D[WebSocket/SSE];
     B -- Authentication --> E[JWT/API Keys];
-    B -- File Metadata --> F[SQLite Database];
+    B -- File Metadata --> F[Database (SQLite/PostgreSQL/MySQL)];
     G[CLI Tools] -- HTTP Basic Auth --> B;
     H[API Clients] -- Bearer Tokens --> B;
 ```