for checkstyle
diff --git a/common-repository/jdbc-repository/pom.xml b/common-repository/jdbc-repository/pom.xml
index 88cca62..4245301 100644
--- a/common-repository/jdbc-repository/pom.xml
+++ b/common-repository/jdbc-repository/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>common-repository</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>common-repository</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>jdbc-repository</artifactId>
     
     <dependencies>
diff --git a/common-repository/jpa-repository/pom.xml b/common-repository/jpa-repository/pom.xml
index 42955a9..1ecdc30 100644
--- a/common-repository/jpa-repository/pom.xml
+++ b/common-repository/jpa-repository/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>common-repository</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>common-repository</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>jpa-repository</artifactId>
     
     <dependencies>
diff --git a/common-repository/mybatis-repository/pom.xml b/common-repository/mybatis-repository/pom.xml
index 11f0ddb..fe4cf80 100644
--- a/common-repository/mybatis-repository/pom.xml
+++ b/common-repository/mybatis-repository/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>common-repository</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>common-repository</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>mybatis-repository</artifactId>
     
     <dependencies>
diff --git a/common-repository/pom.xml b/common-repository/pom.xml
index 7ab7025..2f50ae4 100644
--- a/common-repository/pom.xml
+++ b/common-repository/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>sharding-sphere-example</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>sharding-sphere-example</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>common-repository</artifactId>
     <packaging>pom</packaging>
     
diff --git a/common-repository/repository-api/pom.xml b/common-repository/repository-api/pom.xml
index 4ccba8d..fa14ab7 100644
--- a/common-repository/repository-api/pom.xml
+++ b/common-repository/repository-api/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>common-repository</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>common-repository</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>repository-api</artifactId>
 
     <dependencies>
diff --git a/example-utility/pom.xml b/example-utility/pom.xml
index 0909bc3..21258d5 100644
--- a/example-utility/pom.xml
+++ b/example-utility/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>sharding-sphere-example</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>sharding-sphere-example</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>example-utility</artifactId>
     
     <dependencies>
diff --git a/pom.xml b/pom.xml
index df17280..e1e7601 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>io.shardingsphere</groupId>
     <artifactId>sharding-sphere-example</artifactId>
diff --git a/sharding-jdbc-example/pom.xml b/sharding-jdbc-example/pom.xml
index 5543084..5032adc 100644
--- a/sharding-jdbc-example/pom.xml
+++ b/sharding-jdbc-example/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>sharding-sphere-example</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>sharding-sphere-example</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>sharding-jdbc-example</artifactId>
     <packaging>pom</packaging>
     
diff --git a/sharding-jdbc-example/raw-jdbc-nodep-example/pom.xml b/sharding-jdbc-example/raw-jdbc-nodep-example/pom.xml
index c1ad59e..f8cb9b1 100644
--- a/sharding-jdbc-example/raw-jdbc-nodep-example/pom.xml
+++ b/sharding-jdbc-example/raw-jdbc-nodep-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/raw-jdbc-orche-example/pom.xml b/sharding-jdbc-example/raw-jdbc-orche-example/pom.xml
index 8d8dc34..8095e5b 100644
--- a/sharding-jdbc-example/raw-jdbc-orche-example/pom.xml
+++ b/sharding-jdbc-example/raw-jdbc-orche-example/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>sharding-jdbc-example</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>sharding-jdbc-example</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>raw-jdbc-orche-example</artifactId>
     
     <dependencies>
diff --git a/sharding-jdbc-example/spring-boot-nodep-example/pom.xml b/sharding-jdbc-example/spring-boot-nodep-example/pom.xml
index 6efbae6..8b49af8 100644
--- a/sharding-jdbc-example/spring-boot-nodep-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-nodep-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-jpa-example/pom.xml b/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-jpa-example/pom.xml
index 81f646d..cc63a0e 100644
--- a/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-jpa-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-jpa-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-mybatis-example/pom.xml b/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-mybatis-example/pom.xml
index 2da239f..578112b 100644
--- a/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-mybatis-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-nodep-example/spring-boot-nodep-mybatis-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/spring-boot-orche-example/pom.xml b/sharding-jdbc-example/spring-boot-orche-example/pom.xml
index 8d9a9f6..f1482a2 100644
--- a/sharding-jdbc-example/spring-boot-orche-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-orche-example/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>sharding-jdbc-example</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>sharding-jdbc-example</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>spring-boot-orche-example</artifactId>
     <packaging>pom</packaging>
     
diff --git a/sharding-jdbc-example/spring-boot-orche-example/spring-boot-orche-jpa-example/pom.xml b/sharding-jdbc-example/spring-boot-orche-example/spring-boot-orche-jpa-example/pom.xml
index 1672911..478fb5f 100644
--- a/sharding-jdbc-example/spring-boot-orche-example/spring-boot-orche-jpa-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-orche-example/spring-boot-orche-jpa-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/spring-boot-orche-example/spring-boot-orche-mybatis-example/pom.xml b/sharding-jdbc-example/spring-boot-orche-example/spring-boot-orche-mybatis-example/pom.xml
index a8191ec..ebbe091 100644
--- a/sharding-jdbc-example/spring-boot-orche-example/spring-boot-orche-mybatis-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-orche-example/spring-boot-orche-mybatis-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/spring-namespace-nodep-example/pom.xml b/sharding-jdbc-example/spring-namespace-nodep-example/pom.xml
index eb129f5..317ea96 100644
--- a/sharding-jdbc-example/spring-namespace-nodep-example/pom.xml
+++ b/sharding-jdbc-example/spring-namespace-nodep-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/spring-namespace-nodep-example/spring-namespace-nodep-jpa-example/pom.xml b/sharding-jdbc-example/spring-namespace-nodep-example/spring-namespace-nodep-jpa-example/pom.xml
index 124dcc0..6ba8668 100644
--- a/sharding-jdbc-example/spring-namespace-nodep-example/spring-namespace-nodep-jpa-example/pom.xml
+++ b/sharding-jdbc-example/spring-namespace-nodep-example/spring-namespace-nodep-jpa-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/spring-namespace-nodep-example/spring-namespace-nodep-mybatis-example/pom.xml b/sharding-jdbc-example/spring-namespace-nodep-example/spring-namespace-nodep-mybatis-example/pom.xml
index e18e275..60b8973 100644
--- a/sharding-jdbc-example/spring-namespace-nodep-example/spring-namespace-nodep-mybatis-example/pom.xml
+++ b/sharding-jdbc-example/spring-namespace-nodep-example/spring-namespace-nodep-mybatis-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/spring-namespace-orche-example/pom.xml b/sharding-jdbc-example/spring-namespace-orche-example/pom.xml
index 66afe75..274ac70 100644
--- a/sharding-jdbc-example/spring-namespace-orche-example/pom.xml
+++ b/sharding-jdbc-example/spring-namespace-orche-example/pom.xml
@@ -2,12 +2,12 @@
 <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>
     <parent>
-        <artifactId>sharding-jdbc-example</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>sharding-jdbc-example</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
     <artifactId>spring-namespace-orche-example</artifactId>
     <packaging>pom</packaging>
     
diff --git a/sharding-jdbc-example/spring-namespace-orche-example/spring-namespace-orche-jpa-example/pom.xml b/sharding-jdbc-example/spring-namespace-orche-example/spring-namespace-orche-jpa-example/pom.xml
index 0fd3305..3310374 100644
--- a/sharding-jdbc-example/spring-namespace-orche-example/spring-namespace-orche-jpa-example/pom.xml
+++ b/sharding-jdbc-example/spring-namespace-orche-example/spring-namespace-orche-jpa-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-jdbc-example/spring-namespace-orche-example/spring-namespace-orche-mybatis-example/pom.xml b/sharding-jdbc-example/spring-namespace-orche-example/spring-namespace-orche-mybatis-example/pom.xml
index 9b7b59e..27fbc84 100644
--- a/sharding-jdbc-example/spring-namespace-orche-example/spring-namespace-orche-mybatis-example/pom.xml
+++ b/sharding-jdbc-example/spring-namespace-orche-example/spring-namespace-orche-mybatis-example/pom.xml
@@ -1,4 +1,7 @@
-<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">
+<?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>
     <parent>
         <groupId>io.shardingsphere</groupId>
diff --git a/sharding-proxy-example/sharding-proxy-boot-jpa-example/pom.xml b/sharding-proxy-example/sharding-proxy-boot-jpa-example/pom.xml
index 14f2145..779725e 100644
--- a/sharding-proxy-example/sharding-proxy-boot-jpa-example/pom.xml
+++ b/sharding-proxy-example/sharding-proxy-boot-jpa-example/pom.xml
@@ -2,13 +2,12 @@
 <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>
     <parent>
-        <artifactId>sharding-proxy-example</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>sharding-proxy-example</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
-    <modelVersion>4.0.0</modelVersion>
-    
     <artifactId>sharding-proxy-boot-jpa-example</artifactId>
     
     <dependencies>
diff --git a/sharding-proxy-example/sharding-proxy-boot-mybatis-example/pom.xml b/sharding-proxy-example/sharding-proxy-boot-mybatis-example/pom.xml
index 3391bb0..b06b81e 100644
--- a/sharding-proxy-example/sharding-proxy-boot-mybatis-example/pom.xml
+++ b/sharding-proxy-example/sharding-proxy-boot-mybatis-example/pom.xml
@@ -4,8 +4,8 @@
          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>
     <parent>
-        <artifactId>sharding-proxy-example</artifactId>
         <groupId>io.shardingsphere</groupId>
+        <artifactId>sharding-proxy-example</artifactId>
         <version>3.0.0.M5-SNAPSHOT</version>
     </parent>
     <artifactId>sharding-proxy-boot-mybatis-example</artifactId>