diff --git a/cmd/consumer/cs.go b/cmd/consumer/cs.go
index a3ba0e1..4e9c6a7 100644
--- a/cmd/consumer/cs.go
+++ b/cmd/consumer/cs.go
@@ -6,7 +6,8 @@ import (
 	"os"
 	"os/signal"
 	"smpp-transmitter/config"
-	"smpp-transmitter/pkg/data"
+	"smpp-transmitter/internal/models"
+	"smpp-transmitter/pkg/database"
 	fl "smpp-transmitter/pkg/logger"
 	"smpp-transmitter/pkg/mq"
 	"smpp-transmitter/pkg/mq/rabbitmq"
@@ -36,7 +37,7 @@ func run() error {
 	}
 
 	// Initialize database
-	db, err := data.InitDB(cfg.MysqlDSN)
+	db, err := database.InitMYSQL(cfg.MysqlDSN)
 	if err != nil {
 		logger.Error("Failed to connect to MySQL:", err)
 		return err
@@ -83,7 +84,7 @@ func startConsuming(consumer mq.Consumer, db *gorm.DB, logger fl.LogService) {
 }
 
 func handleMessage(ctx context.Context, body []byte, db *gorm.DB, logger fl.LogService) {
-	message := &data.Message{}
+	message := &models.Message{}
 
 	if err := message.Convert(body); err != nil {
 		logger.Error("Message cannot be converted", err)
diff --git a/pkg/data/message.go b/internal/models/message.go
similarity index 97%
rename from pkg/data/message.go
rename to internal/models/message.go
index 95a40da..0ab140b 100644
--- a/pkg/data/message.go
+++ b/internal/models/message.go
@@ -1,4 +1,4 @@
-package data
+package models
 
 import (
 	"context"
diff --git a/pkg/database/mysql.go b/pkg/database/mysql.go
new file mode 100644
index 0000000..8a3324a
--- /dev/null
+++ b/pkg/database/mysql.go
@@ -0,0 +1,13 @@
+package database
+
+import (
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+)
+
+func InitMYSQL(dsn string) (*gorm.DB, error) {
+	return gorm.Open(mysql.Open(dsn), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Error),
+	})
+}
diff --git a/pkg/mq/rabbitmq/consumer.go b/pkg/mq/rabbitmq/consumer.go
index e10b6fe..61a7b2b 100644
--- a/pkg/mq/rabbitmq/consumer.go
+++ b/pkg/mq/rabbitmq/consumer.go
@@ -7,7 +7,7 @@ import (
 	"time"
 )
 
-type RabbitMQConsumer struct {
+type rabbitMQConsumer struct {
 	connection    mq.Connection
 	exchangeName  string
 	queueName     string
@@ -16,7 +16,7 @@ type RabbitMQConsumer struct {
 }
 
 func NewRabbitMQConsumer(url, exchangeName, queueName, routingKey string, prefetchCount int) mq.Consumer {
-	return &RabbitMQConsumer{
+	return &rabbitMQConsumer{
 		connection:    NewRabbitMQConnection(url),
 		exchangeName:  exchangeName,
 		queueName:     queueName,
@@ -25,7 +25,7 @@ func NewRabbitMQConsumer(url, exchangeName, queueName, routingKey string, prefet
 	}
 }
 
-func (r *RabbitMQConsumer) Consume(handler mq.MessageHandler) {
+func (r *rabbitMQConsumer) Consume(handler mq.MessageHandler) {
 	for {
 		if err := r.connect(); err != nil {
 			log.Printf("Error connecting to RabbitMQ: %v. Retrying in 5 seconds...", err)
@@ -42,7 +42,7 @@ func (r *RabbitMQConsumer) Consume(handler mq.MessageHandler) {
 	}
 }
 
-func (r *RabbitMQConsumer) connect() error {
+func (r *rabbitMQConsumer) connect() error {
 	if err := r.connection.Connect(); err != nil {
 		return err
 	}
@@ -69,7 +69,7 @@ func (r *RabbitMQConsumer) connect() error {
 	return nil
 }
 
-func (r *RabbitMQConsumer) consumeMessages(handler mq.MessageHandler) error {
+func (r *rabbitMQConsumer) consumeMessages(handler mq.MessageHandler) error {
 	channel, err := r.connection.Channel()
 	if err != nil {
 		return err