diff --git a/examples/liquibase-demo/src/main/java/ru/otus/spring/Main.java b/examples/liquibase-demo/src/main/java/ru/otus/spring/Main.java
index 5406a277..092c6ba8 100644
--- a/examples/liquibase-demo/src/main/java/ru/otus/spring/Main.java
+++ b/examples/liquibase-demo/src/main/java/ru/otus/spring/Main.java
@@ -3,6 +3,9 @@ package ru.otus.spring;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
+// url h2 консоли: http://localhost:8080/h2-console
+// url базы: jdbc:h2:mem:testdb
+
 @SpringBootApplication
 public class Main {
 
diff --git a/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0002-avatars.sql b/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0001-avatars.sql
similarity index 66%
rename from examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0002-avatars.sql
rename to examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0001-avatars.sql
index 74d7beac..6002ef7d 100644
--- a/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0002-avatars.sql
+++ b/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0001-avatars.sql
@@ -1,11 +1,11 @@
 --liquibase formatted sql
 
---changeset stvort:2020-05-25-002-avatars
+--changeset stvort:2020-05-25-001-avatars
 create table avatars (
     id bigserial,
     photo_url varchar(255)
 )
 
---changeset stvort:2020-05-25-002-users-avatars-id
+--changeset stvort:2020-05-25-001-users-avatars-id
 alter table users
 add column avatar_id bigint references avatars(id) ON DELETE SET NULL
\ No newline at end of file
diff --git a/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0003-emails.json b/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0002-emails.json
similarity index 90%
rename from examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0003-emails.json
rename to examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0002-emails.json
index 2653875f..c7ecdaf8 100644
--- a/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0003-emails.json
+++ b/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0002-emails.json
@@ -2,7 +2,7 @@
   "databaseChangeLog": [
     {
       "changeSet": {
-        "id": "2020-05-25--003-emails",
+        "id": "2020-05-25--002-emails",
         "author": "stvort",
         "changes": [
           {
@@ -16,8 +16,7 @@
                     "autoIncrement": true,
                     "constraints": {
                       "primaryKey": true,
-                      "nullable": false,
-                      "deleteCascade": true
+                      "nullable": false
                     }
                   }
                 },
@@ -28,7 +27,8 @@
                     "constraints": {
                       "nullable": false,
                       "foreignKeyName": "fk_emails_users",
-                      "references": "users(id)"
+                      "references": "users(id)",
+                      "deleteCascade": true
                     }
                   }
                 },
diff --git a/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0001-courses.xml b/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0003-courses.xml
similarity index 92%
rename from examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0001-courses.xml
rename to examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0003-courses.xml
index f0969d90..47175a12 100644
--- a/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0001-courses.xml
+++ b/examples/liquibase-demo/src/main/resources/db/changelog/2.0/2020-05-25--0003-courses.xml
@@ -5,7 +5,7 @@
         xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.8.xsd
         http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd">
 
-    <changeSet id="2020-05-25--001-courses" author="stvort">
+    <changeSet id="2020-05-25--003-courses" author="stvort">
         <createTable tableName="courses">
             <column name="id" type="bigint" autoIncrement="true">
                 <constraints primaryKey="true" nullable="false"/>
@@ -14,7 +14,7 @@
         </createTable>
     </changeSet>
 
-    <changeSet id="2020-05-25--001-users_courses" author="stvort">
+    <changeSet id="2020-05-25--003-users_courses" author="stvort">
         <createTable tableName="users_courses">
             <column name="user_id" type="bigint">
                 <constraints nullable="false"
diff --git a/examples/liquibase-demo/src/main/resources/db/changelog/data/2020-05-25--0001-test-data.yaml b/examples/liquibase-demo/src/main/resources/db/changelog/data/2020-05-25--0001-test-data.yaml
index 16748ea7..197a3f2a 100644
--- a/examples/liquibase-demo/src/main/resources/db/changelog/data/2020-05-25--0001-test-data.yaml
+++ b/examples/liquibase-demo/src/main/resources/db/changelog/data/2020-05-25--0001-test-data.yaml
@@ -21,7 +21,7 @@ databaseChangeLog:
     runOnChange: true
     loadUpdateData:
       primaryKey: id
-      file: data/2020-05-25--0002-users.csv
+      file: data/2020-05-25--0002-users-avatars.csv
       relativeToChangelogFile: true
       separator: ;
       quotChar: '"'
diff --git a/examples/liquibase-demo/src/main/resources/db/changelog/data/2020-05-25--0002-courses.sql b/examples/liquibase-demo/src/main/resources/db/changelog/data/2020-05-25--0002-courses.sql
index 1e1c3a3a..05dfe70d 100644
--- a/examples/liquibase-demo/src/main/resources/db/changelog/data/2020-05-25--0002-courses.sql
+++ b/examples/liquibase-demo/src/main/resources/db/changelog/data/2020-05-25--0002-courses.sql
@@ -10,5 +10,5 @@ values (1, 'Разработчик Java'),
 --changeset stvort:2020-05-25-002-users-courses
 insert into users_courses (user_id, course_id)
 values (1, 1), (1, 2), (1, 3), (1, 4),
-       (2, 1), (2, 2), (1, 3),
+       (2, 1), (2, 2), (2, 3),
        (3, 3), (3, 4)
\ No newline at end of file
diff --git a/examples/liquibase-demo/src/main/resources/db/changelog/data/data/2020-05-25--0002-users.csv b/examples/liquibase-demo/src/main/resources/db/changelog/data/data/2020-05-25--0002-users-avatars.csv
similarity index 100%
rename from examples/liquibase-demo/src/main/resources/db/changelog/data/data/2020-05-25--0002-users.csv
rename to examples/liquibase-demo/src/main/resources/db/changelog/data/data/2020-05-25--0002-users-avatars.csv