diff --git a/security-modules/cas/cas-secured-app/pom.xml b/security-modules/cas/cas-secured-app/pom.xml
index 6f1ec22cb5..7c4864b1c0 100644
--- a/security-modules/cas/cas-secured-app/pom.xml
+++ b/security-modules/cas/cas-secured-app/pom.xml
@@ -36,6 +36,15 @@
             <artifactId>spring-boot-devtools</artifactId>
             <scope>runtime</scope>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <scope>runtime</scope>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
@@ -46,6 +55,11 @@
             <artifactId>spring-security-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>${h2.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/CasSecuredApplication.java b/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/CasSecuredApplication.java
index 62da9cf725..f78d7a45d5 100644
--- a/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/CasSecuredApplication.java
+++ b/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/CasSecuredApplication.java
@@ -1,7 +1,6 @@
 package com.baeldung.cassecuredapp;
 
 import org.jasig.cas.client.session.SingleSignOutFilter;
-import org.jasig.cas.client.session.SingleSignOutHttpSessionListener;
 import org.jasig.cas.client.validation.Cas30ServiceTicketValidator;
 import org.jasig.cas.client.validation.TicketValidator;
 import org.slf4j.Logger;
@@ -9,21 +8,16 @@ import org.slf4j.LoggerFactory;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Primary;
-import org.springframework.context.event.EventListener;
 import org.springframework.security.authentication.AuthenticationManager;
 import org.springframework.security.cas.ServiceProperties;
 import org.springframework.security.cas.authentication.CasAuthenticationProvider;
-import org.springframework.security.cas.web.CasAuthenticationEntryPoint;
 import org.springframework.security.cas.web.CasAuthenticationFilter;
 import org.springframework.security.core.authority.AuthorityUtils;
 import org.springframework.security.core.userdetails.User;
-import org.springframework.security.web.AuthenticationEntryPoint;
-import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
 import org.springframework.security.web.authentication.logout.LogoutFilter;
 import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler;
 
-import javax.servlet.http.HttpSessionEvent;
+import com.baeldung.cassecuredapp.service.CasUserDetailsService;
 
 @SpringBootApplication
 public class CasSecuredApplication {
@@ -34,6 +28,7 @@ public class CasSecuredApplication {
         SpringApplication.run(CasSecuredApplication.class, args);
     }
 
+
     @Bean
     public CasAuthenticationFilter casAuthenticationFilter(
       AuthenticationManager authenticationManager,
@@ -58,6 +53,10 @@ public class CasSecuredApplication {
         return new Cas30ServiceTicketValidator("https://localhost:8443/cas");
     }
 
+    @Bean
+    public CasUserDetailsService getUser(){
+        return new CasUserDetailsService();
+    }
     @Bean
     public CasAuthenticationProvider casAuthenticationProvider(
       TicketValidator ticketValidator,
@@ -68,6 +67,8 @@ public class CasSecuredApplication {
         provider.setUserDetailsService(
           s -> new User("casuser", "Mellon", true, true, true, true,
           AuthorityUtils.createAuthorityList("ROLE_ADMIN")));
+        //For Authentication with a Database-backed UserDetailsService
+        //provider.setUserDetailsService(getUser());
         provider.setKey("CAS_PROVIDER_LOCALHOST_8900");
         return provider;
     }
diff --git a/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/service/CasUserDetailsService.java b/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/service/CasUserDetailsService.java
new file mode 100644
index 0000000000..801f5726b7
--- /dev/null
+++ b/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/service/CasUserDetailsService.java
@@ -0,0 +1,37 @@
+package com.baeldung.cassecuredapp.service;
+
+import java.util.Collections;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+
+import com.baeldung.cassecuredapp.user.CasUser;
+import com.baeldung.cassecuredapp.user.UserRepository;
+
+public class CasUserDetailsService implements UserDetailsService {
+
+    @Autowired
+    private UserRepository userRepository;
+
+    @Override
+    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+        // Get the user from the database.
+        CasUser casUser = getUserFromDatabase(username);
+
+        // Create a UserDetails object.
+        UserDetails userDetails = new User(
+            casUser.getEmail(),
+            casUser.getPassword(),
+           Collections.singletonList(new SimpleGrantedAuthority("ROLE_ADMIN")));
+
+        return userDetails;
+    }
+
+    private CasUser getUserFromDatabase(String username) {
+       return userRepository.findByEmail(username);
+    }
+}
diff --git a/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/user/CasUser.java b/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/user/CasUser.java
new file mode 100644
index 0000000000..2bf96d0994
--- /dev/null
+++ b/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/user/CasUser.java
@@ -0,0 +1,41 @@
+package com.baeldung.cassecuredapp.user;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+
+@Entity
+public class CasUser {
+    @Id
+    private Long id;
+
+    @Column(nullable = false, unique = true)
+    private String email;
+
+    private String password;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+}
diff --git a/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/user/UserRepository.java b/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/user/UserRepository.java
new file mode 100644
index 0000000000..623ccf2e38
--- /dev/null
+++ b/security-modules/cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/user/UserRepository.java
@@ -0,0 +1,12 @@
+package com.baeldung.cassecuredapp.user;
+
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface UserRepository extends CrudRepository<CasUser, Long> {
+
+    CasUser findByEmail(@Param("email") String email);
+
+}
diff --git a/security-modules/cas/cas-secured-app/src/main/resources/application.properties b/security-modules/cas/cas-secured-app/src/main/resources/application.properties
index f8789997d5..5c93c67ff1 100644
--- a/security-modules/cas/cas-secured-app/src/main/resources/application.properties
+++ b/security-modules/cas/cas-secured-app/src/main/resources/application.properties
@@ -1,2 +1,8 @@
 server.port=8900
-spring.freemarker.suffix=.ftl
\ No newline at end of file
+spring.freemarker.suffix=.ftl
+
+#spring.jpa.generate-ddl=false
+#spring.datasource.url= jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
+#spring.datasource.username=root
+#spring.datasource.password=root
+#spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
\ No newline at end of file
diff --git a/security-modules/cas/cas-server/src/main/resources/application.yml b/security-modules/cas/cas-server/src/main/resources/application.yml
index 0c4e4ffde2..a49e86dd09 100644
--- a/security-modules/cas/cas-server/src/main/resources/application.yml
+++ b/security-modules/cas/cas-server/src/main/resources/application.yml
@@ -8,3 +8,19 @@ server:
 spring:
     main:
         allow-bean-definition-overriding: true
+#cas:
+#    authn:
+#        accept:
+#            users:
+#        jdbc:
+#            query[0]:
+#                sql: SELECT * FROM users WHERE email = ?
+#                url: jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
+#                dialect: org.hibernate.dialect.MySQLDialect
+#                user: root
+#                password: root
+#                ddlAuto: none
+#                driverClass: com.mysql.cj.jdbc.Driver
+#                fieldPassword: password
+#                passwordEncoder:
+#                   type: NONE