diff --git a/Readme.md b/Readme.md
index 5c1f813..ae2690a 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,22 +1,22 @@
-## Spring Boot, PostgreSQL, JPA, Hibernate REST API Demo
+## Spring Boot, MySQL, JPA, Hibernate REST API Demo
 
 ## Tutorial
 
 Check out the complete tutorial on the CalliCoder blog -
 
-[Spring Boot, PostgreSQL, JPA, Hibernate RESTful CRUD API Example](https://www.callicoder.com/spring-boot-jpa-hibernate-postgresql-restful-crud-api-example/)
+[Spring Boot, MySQL, JPA, Hibernate RESTful CRUD API Example](https://www.callicoder.com/spring-boot-jpa-hibernate-postgresql-restful-crud-api-example/)
 
 ## Steps to Setup
 
 **1. Clone the repository**
 
 ```bash
-git clone https://github.com/callicoder/spring-boot-postgresql-jpa-hibernate-rest-api-demo.git
+https://github.com/DouglasEleuterio/spring-boot-postgresql-jpa-hibernate-rest-api-demo.git
 ```
 
-**2. Configure PostgreSQL**
+**2. Configure MySQL**
 
-First, create a database named `postgres_demo`. Then, open `src/main/resources/application.properties` file and change the spring datasource username and password as per your PostgreSQL installation.
+First, create a database named `demo`. Then, open `src/main/resources/application.properties` file and change the spring datasource username and password as per your MySQL installation.
 
 **3. Run the app**
 
diff --git a/pom.xml b/pom.xml
index 2b558f8..3695cc9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,43 +1,42 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
-
-	<groupId>com.example</groupId>
-	<artifactId>postgres-demo</artifactId>
-	<version>0.0.1-SNAPSHOT</version>
-	<packaging>jar</packaging>
-
-	<name>postgres-demo</name>
-	<description>Demo project for Spring Boot</description>
-
-	<parent>
-		<groupId>org.springframework.boot</groupId>
-		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.2.1.RELEASE</version>
-		<relativePath/> <!-- lookup parent from repository -->
-	</parent>
-
-	<properties>
-		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>1.8</java.version>
-	</properties>
-
-	<dependencies>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-data-jpa</artifactId>
-		</dependency>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-web</artifactId>
-		</dependency>
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.example</groupId>
+    <artifactId>postgres-demo</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <name>postgres-demo</name>
+    <description>Demo project for Spring Boot</description>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.2.1.RELEASE</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <java.version>1.8</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
 
 		<dependency>
-			<groupId>org.postgresql</groupId>
-			<artifactId>postgresql</artifactId>
-			<scope>runtime</scope>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -46,14 +45,14 @@
 		</dependency>
 	</dependencies>
 
-	<build>
-		<plugins>
-			<plugin>
-				<groupId>org.springframework.boot</groupId>
-				<artifactId>spring-boot-maven-plugin</artifactId>
-			</plugin>
-		</plugins>
-	</build>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
 
 
 </project>
diff --git a/src/main/java/com/example/postgresdemo/model/Answer.java b/src/main/java/com/example/postgresdemo/model/Answer.java
index b5e48d0..95b9ee2 100644
--- a/src/main/java/com/example/postgresdemo/model/Answer.java
+++ b/src/main/java/com/example/postgresdemo/model/Answer.java
@@ -5,17 +5,17 @@
 import org.hibernate.annotations.OnDeleteAction;
 
 import javax.persistence.*;
+import java.io.Serializable;
 
 @Entity
 @Table(name = "answers")
-public class Answer extends AuditModel {
+public class Answer extends AuditModel implements Serializable {
+
+    private static final long servialVersionUID = 1L;
+
     @Id
-    @GeneratedValue(generator = "answer_generator")
-    @SequenceGenerator(
-            name = "answer_generator",
-            sequenceName = "answer_sequence",
-            initialValue = 1000
-    )
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+
     private Long id;
 
     @Column(columnDefinition = "text")
diff --git a/src/main/java/com/example/postgresdemo/model/Question.java b/src/main/java/com/example/postgresdemo/model/Question.java
index d16a459..51213a1 100644
--- a/src/main/java/com/example/postgresdemo/model/Question.java
+++ b/src/main/java/com/example/postgresdemo/model/Question.java
@@ -3,17 +3,15 @@
 import javax.persistence.*;
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.Size;
+import java.io.Serializable;
 
 @Entity
 @Table(name = "questions")
-public class Question extends AuditModel {
+public class Question extends AuditModel implements Serializable {
+    private static final long servialVersionUID = 1L;
+
     @Id
-    @GeneratedValue(generator = "question_generator")
-    @SequenceGenerator(
-            name = "question_generator",
-            sequenceName = "question_sequence",
-            initialValue = 1000
-    )
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
     @NotBlank
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 35b376a..40c5e00 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -1,10 +1,16 @@
-## Spring DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)
-spring.datasource.url=jdbc:postgresql://localhost:5432/postgres_demo
-spring.datasource.username= postgres
-spring.datasource.password=
+#Trabalhando com MySQL
+spring.datasource.url=jdbc:mysql://localhost:3306/demo?useTimezone=true&serverTimezone=UTC&useSSL=false
+spring.datasource.username=root
+spring.datasource.password=root
 
 # The SQL dialect makes Hibernate generate better SQL for the chosen database
-spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
+spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL8Dialect
 
 # Hibernate ddl auto (create, create-drop, validate, update)
-spring.jpa.hibernate.ddl-auto = update
+spring.jpa.hibernate.ddl-auto=update
+spring.jpa.show-sql=true
+spring.jpa.properties.hibernate.format_sql=true
+
+spring.datasource.hikari.maximum-pool-size=25
+
+