PERS structure: nullable fields

others/db_changes/struct/create_pers.xml

@@ -6,10 +6,14 @@
 			<constraints primaryKey="true" primaryKeyName="PK_PERS_PERSID"/>
 		</column>
 		<column name="DATE_EDIT" type="TIMESTAMP"/>
-		<column name="DATE_NEW" type="TIMESTAMP"/>
+		<column name="DATE_NEW" type="TIMESTAMP">
+                    <constraints nullable="false"/>
+                </column>
 		<column name="DATEOFBIRTH" type="DATE"/>
 		<column name="USER_EDIT" type="NVARCHAR(50)"/>
-		<column name="USER_NEW" type="NVARCHAR(50)"/>
+		<column name="USER_NEW" type="NVARCHAR(50)">
+                    <constraints nullable="false"/>
+                </column>
 		<column name="FIRSTNAME" type="NVARCHAR(50)"/>
 		<column name="MIDDLENAME" type="NVARCHAR(50)"/>
 		<column name="LASTNAME" type="NVARCHAR(50)">