diff --git a/src/associations.js b/src/associations.js
new file mode 100644
index 0000000..08bf67a
--- /dev/null
+++ b/src/associations.js
@@ -0,0 +1,19 @@
+class AssociationsDefiner {
+  constructor({ models, DataTypes }) {
+    this.models = models;
+    this.DataTypes = DataTypes;
+  }
+
+  define() {
+    this.models.OfferCreated.hasOne(this.models.OfferDeleted);
+    this.models.OfferDeleted.belongsTo(this.models.OfferCreated, {
+      foreignKey: {
+        name: 'offer_uuid',
+        type: this.DataTypes.UUID,
+        allowNull: false,
+      },
+    });
+  }
+}
+
+module.exports = AssociationsDefiner;
diff --git a/src/database.js b/src/database.js
index 133328f..ed4ef6c 100644
--- a/src/database.js
+++ b/src/database.js
@@ -10,11 +10,11 @@ const sequelize = new Sequelize({
   database: process.env.POSTGRES_DB,
   username: process.env.POSTGRES_USER,
   password: process.env.POSTGRES_PASSWORD,
-  logging: (msg) => {
+  /* logging: (msg) => {
     if (msg && (msg.includes('ERROR') || msg.includes('error'))) {
       console.error(msg);
     }
-  },
+  }, */
   define: {
     timestamps: false,
     freezeTableName: true,
@@ -23,13 +23,4 @@ const sequelize = new Sequelize({
   },
 });
 
-sequelize
-  .sync()
-  .then(() => {
-    console.log('Database synced');
-  })
-  .catch((err) => {
-    console.error('Error syncing the database:', err);
-  });
-
 module.exports = sequelize;
diff --git a/src/dependencies.js b/src/dependencies.js
index 6c68534..b85ad2e 100644
--- a/src/dependencies.js
+++ b/src/dependencies.js
@@ -1,6 +1,6 @@
 const express = require('express');
 
-function buildDependencies() {
+async function buildDependencies() {
   const dependencies = {};
   const errors = require('./errors');
   const constants = require('./constants');
@@ -10,6 +10,18 @@ function buildDependencies() {
   const ModelsProvider = require('./models');
   const models = new ModelsProvider({ sequelize, DataTypes }).provide();
 
+  const AssociationsDefiner = require('./associations');
+  new AssociationsDefiner({ models, DataTypes }).define();
+
+  sequelize
+    .sync({ alter: true })
+    .then(() => {
+      console.log('Database synced');
+    })
+    .catch((err) => {
+      console.error('Error syncing the database:', err);
+    });
+
   const ServicesProvider = require('./services');
   const services = new ServicesProvider({
     models,