diff --git a/samples/contacts/src/main/java/sample/contact/DataSourcePopulator.java b/samples/contacts/src/main/java/sample/contact/DataSourcePopulator.java
index 1b0c33f730..e01ecc183b 100644
--- a/samples/contacts/src/main/java/sample/contact/DataSourcePopulator.java
+++ b/samples/contacts/src/main/java/sample/contact/DataSourcePopulator.java
@@ -85,13 +85,36 @@ public class DataSourcePopulator implements InitializingBean {
         SecurityContextHolder.getContext().setAuthentication(authRequest);
 
         template.execute(
-            "CREATE TABLE ACL_SID(ID BIGINT GENERATED BY DEFAULT AS IDENTITY(START WITH 100) NOT NULL PRIMARY KEY,PRINCIPAL BOOLEAN NOT NULL,SID VARCHAR_IGNORECASE(100) NOT NULL,CONSTRAINT UNIQUE_UK_1 UNIQUE(SID,PRINCIPAL));");
+            "CREATE TABLE ACL_SID(" +
+                    "ID BIGINT GENERATED BY DEFAULT AS IDENTITY(START WITH 100) NOT NULL PRIMARY KEY," +
+                    "PRINCIPAL BOOLEAN NOT NULL," +
+                    "SID VARCHAR_IGNORECASE(100) NOT NULL," +
+                    "CONSTRAINT UNIQUE_UK_1 UNIQUE(SID,PRINCIPAL));");
         template.execute(
-            "CREATE TABLE ACL_CLASS(ID BIGINT GENERATED BY DEFAULT AS IDENTITY(START WITH 100) NOT NULL PRIMARY KEY,CLASS VARCHAR_IGNORECASE(100) NOT NULL,CONSTRAINT UNIQUE_UK_2 UNIQUE(CLASS));");
+            "CREATE TABLE ACL_CLASS(" +
+                    "ID BIGINT GENERATED BY DEFAULT AS IDENTITY(START WITH 100) NOT NULL PRIMARY KEY," +
+                    "CLASS VARCHAR_IGNORECASE(100) NOT NULL," +
+                    "CONSTRAINT UNIQUE_UK_2 UNIQUE(CLASS));");
         template.execute(
-            "CREATE TABLE ACL_OBJECT_IDENTITY(ID BIGINT GENERATED BY DEFAULT AS IDENTITY(START WITH 100) NOT NULL PRIMARY KEY,OBJECT_ID_CLASS BIGINT NOT NULL,OBJECT_ID_IDENTITY BIGINT NOT NULL,PARENT_OBJECT BIGINT,OWNER_SID BIGINT,ENTRIES_INHERITING BOOLEAN NOT NULL,CONSTRAINT UNIQUE_UK_3 UNIQUE(OBJECT_ID_CLASS,OBJECT_ID_IDENTITY),CONSTRAINT FOREIGN_FK_1 FOREIGN KEY(PARENT_OBJECT)REFERENCES ACL_OBJECT_IDENTITY(ID),CONSTRAINT FOREIGN_FK_2 FOREIGN KEY(OBJECT_ID_CLASS)REFERENCES ACL_CLASS(ID),CONSTRAINT FOREIGN_FK_3 FOREIGN KEY(OWNER_SID)REFERENCES ACL_SID(ID));");
+            "CREATE TABLE ACL_OBJECT_IDENTITY(" +
+                    "ID BIGINT GENERATED BY DEFAULT AS IDENTITY(START WITH 100) NOT NULL PRIMARY KEY," +
+                    "OBJECT_ID_CLASS BIGINT NOT NULL," +
+                    "OBJECT_ID_IDENTITY BIGINT NOT NULL," +
+                    "PARENT_OBJECT BIGINT," +
+                    "OWNER_SID BIGINT," +
+                    "ENTRIES_INHERITING BOOLEAN NOT NULL," +
+                    "CONSTRAINT UNIQUE_UK_3 UNIQUE(OBJECT_ID_CLASS,OBJECT_ID_IDENTITY)," +
+                    "CONSTRAINT FOREIGN_FK_1 FOREIGN KEY(PARENT_OBJECT)REFERENCES ACL_OBJECT_IDENTITY(ID)," +
+                    "CONSTRAINT FOREIGN_FK_2 FOREIGN KEY(OBJECT_ID_CLASS)REFERENCES ACL_CLASS(ID)," +
+                    "CONSTRAINT FOREIGN_FK_3 FOREIGN KEY(OWNER_SID)REFERENCES ACL_SID(ID));");
         template.execute(
-            "CREATE TABLE ACL_ENTRY(ID BIGINT GENERATED BY DEFAULT AS IDENTITY(START WITH 100) NOT NULL PRIMARY KEY,ACL_OBJECT_IDENTITY BIGINT NOT NULL,ACE_ORDER INT NOT NULL,SID BIGINT NOT NULL,MASK INTEGER NOT NULL,GRANTING BOOLEAN NOT NULL,AUDIT_SUCCESS BOOLEAN NOT NULL,AUDIT_FAILURE BOOLEAN NOT NULL,CONSTRAINT UNIQUE_UK_4 UNIQUE(ACL_OBJECT_IDENTITY,ACE_ORDER),CONSTRAINT FOREIGN_FK_4 FOREIGN KEY(ACL_OBJECT_IDENTITY) REFERENCES ACL_OBJECT_IDENTITY(ID),CONSTRAINT FOREIGN_FK_5 FOREIGN KEY(SID) REFERENCES ACL_SID(ID));");
+            "CREATE TABLE ACL_ENTRY(" +
+                    "ID BIGINT GENERATED BY DEFAULT AS IDENTITY(START WITH 100) NOT NULL PRIMARY KEY," +
+                    "ACL_OBJECT_IDENTITY BIGINT NOT NULL,ACE_ORDER INT NOT NULL,SID BIGINT NOT NULL," +
+                    "MASK INTEGER NOT NULL,GRANTING BOOLEAN NOT NULL,AUDIT_SUCCESS BOOLEAN NOT NULL," +
+                    "AUDIT_FAILURE BOOLEAN NOT NULL,CONSTRAINT UNIQUE_UK_4 UNIQUE(ACL_OBJECT_IDENTITY,ACE_ORDER)," +
+                    "CONSTRAINT FOREIGN_FK_4 FOREIGN KEY(ACL_OBJECT_IDENTITY) REFERENCES ACL_OBJECT_IDENTITY(ID)," +
+                    "CONSTRAINT FOREIGN_FK_5 FOREIGN KEY(SID) REFERENCES ACL_SID(ID));");
 
         template.execute(
             "CREATE TABLE USERS(USERNAME VARCHAR_IGNORECASE(50) NOT NULL PRIMARY KEY,PASSWORD VARCHAR_IGNORECASE(50) NOT NULL,ENABLED BOOLEAN NOT NULL);");