diff --git a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/ChangeColumnTypePanel.java b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/ChangeColumnTypePanel.java
index 06e79f9..edc7bd4 100644
--- a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/ChangeColumnTypePanel.java
+++ b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/ChangeColumnTypePanel.java
@@ -43,7 +43,7 @@ import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.ColumnDataType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.ColumnTypeCode;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.ColumnTypeMap;
-import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.TimeDimensionType;
+import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.PeriodDataType;
 
 import com.allen_sauer.gwt.log.client.Log;
 import com.google.gwt.core.client.GWT;
@@ -418,12 +418,6 @@ public class ChangeColumnTypePanel extends FramedPanel implements
 		storeComboTimeDimensionType.addAll(TimeDimensionTypeStore
 				.getTimeDimensionType());
 
-		/*
-		 * ListView<TimeDimensionTypeElement, String> view = new
-		 * ListView<TimeDimensionTypeElement,
-		 * String>(storeComboTimeDimensionType,
-		 * propsTimeDimensionType.viewLabel()); view.setWidth("150px");
-		 */
 		comboTimeDimensionType = new ComboBox<TimeDimensionTypeElement>(
 				storeComboTimeDimensionType, propsTimeDimensionType.label());
 		Log.trace("ComboTimeDimensionType created");
@@ -775,7 +769,7 @@ public class ChangeColumnTypePanel extends FramedPanel implements
 
 	}
 
-	protected void updateTimeDimensionType(TimeDimensionType type) {
+	protected void updateTimeDimensionType(PeriodDataType type) {
 
 	}
 
@@ -1151,7 +1145,7 @@ public class ChangeColumnTypePanel extends FramedPanel implements
 					TimeDimensionTypeElement timeDimensionTypeElement = comboTimeDimensionType
 							.getCurrentValue();
 					if (timeDimensionTypeElement != null) {
-						TimeDimensionType timeDimensionType = timeDimensionTypeElement
+						PeriodDataType timeDimensionType = timeDimensionTypeElement
 								.getType();
 						if (timeDimensionType != null) {
 							changeColumnTypeSession
diff --git a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/create/AddColumnPanel.java b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/create/AddColumnPanel.java
index 3f3b5de..fd251b3 100644
--- a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/create/AddColumnPanel.java
+++ b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/create/AddColumnPanel.java
@@ -39,7 +39,7 @@ import org.gcube.portlets.user.td.widgetcommonevent.shared.OperationResult;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.ColumnDataType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.ColumnTypeCode;
-import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.TimeDimensionType;
+import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.PeriodDataType;
 
 import com.allen_sauer.gwt.log.client.Log;
 import com.google.gwt.core.client.GWT;
@@ -643,7 +643,7 @@ public class AddColumnPanel extends FramedPanel implements
 
 	}
 
-	protected void updateTimeDimensionType(TimeDimensionType type) {
+	protected void updateTimeDimensionType(PeriodDataType type) {
 
 	}
 
@@ -791,7 +791,7 @@ public class AddColumnPanel extends FramedPanel implements
 					TimeDimensionTypeElement timeDimensionTypeElement = comboTimeDimensionType
 							.getCurrentValue();
 					if (timeDimensionTypeElement != null) {
-						TimeDimensionType timeDimensionType = timeDimensionTypeElement
+						PeriodDataType timeDimensionType = timeDimensionTypeElement
 								.getType();
 						if (timeDimensionType != null) {
 							defNewColumn = new DefNewColumn(labelS, type,
diff --git a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/store/TimeDimensionTypeElement.java b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/store/TimeDimensionTypeElement.java
index 70c842f..d7dc456 100644
--- a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/store/TimeDimensionTypeElement.java
+++ b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/store/TimeDimensionTypeElement.java
@@ -1,6 +1,6 @@
 package org.gcube.portlets.user.td.columnwidget.client.store;
 
-import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.TimeDimensionType;
+import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.PeriodDataType;
 
 /**
  * 
@@ -11,10 +11,10 @@ import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.TimeDimensi
 public class TimeDimensionTypeElement {
 	
 	protected int id; // For insert in table only
-	protected TimeDimensionType type;
+	protected PeriodDataType type;
 	
 	
-	public TimeDimensionTypeElement(int id,TimeDimensionType type){
+	public TimeDimensionTypeElement(int id,PeriodDataType type){
 		this.id=id;
 		this.type=type;
 	}
@@ -28,19 +28,19 @@ public class TimeDimensionTypeElement {
 		this.id = id;
 	}
 	
-	public TimeDimensionType getType() {
+	public PeriodDataType getType() {
 		return type;
 	}
-	public void setCode(TimeDimensionType type) {
+	public void setCode(PeriodDataType type) {
 		this.type = type;
 	}
 	
 	public String getLabel() {
-		return type.toString();
+		return type.getPeriodDataTypeLabel();
 	}
 
 	public String getViewLabel() {
-		return type.toString();
+		return type.getPeriodDataTypeLabel();
 	}
 
 
diff --git a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/store/TimeDimensionTypeStore.java b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/store/TimeDimensionTypeStore.java
index cbe0bbb..64bdaf6 100644
--- a/src/main/java/org/gcube/portlets/user/td/columnwidget/client/store/TimeDimensionTypeStore.java
+++ b/src/main/java/org/gcube/portlets/user/td/columnwidget/client/store/TimeDimensionTypeStore.java
@@ -3,7 +3,8 @@ package org.gcube.portlets.user.td.columnwidget.client.store;
 import java.io.Serializable;
 import java.util.ArrayList;
 
-import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.TimeDimensionType;
+import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.PeriodDataType;
+
 
 
 
@@ -18,13 +19,15 @@ public class TimeDimensionTypeStore implements Serializable {
 
 	private static final long serialVersionUID = -5669638279415262224L;
 
-	protected static ArrayList<TimeDimensionTypeElement> store;
-	
-	protected static TimeDimensionTypeElement dayElement=new TimeDimensionTypeElement(1,TimeDimensionType.Day);
-	protected static TimeDimensionTypeElement monthElement=new TimeDimensionTypeElement(2,TimeDimensionType.Month);
-	protected static TimeDimensionTypeElement quarterElement=new TimeDimensionTypeElement(3,TimeDimensionType.Quarter);
-	protected static TimeDimensionTypeElement yearElement=new TimeDimensionTypeElement(4,TimeDimensionType.Year);
+	private static ArrayList<TimeDimensionTypeElement> store;
 	
+	private static TimeDimensionTypeElement dayElement=new TimeDimensionTypeElement(1,PeriodDataType.DAY);
+	private static TimeDimensionTypeElement monthElement=new TimeDimensionTypeElement(2,PeriodDataType.MONTH);
+	private static TimeDimensionTypeElement quarterElement=new TimeDimensionTypeElement(3,PeriodDataType.QUARTER);
+	private static TimeDimensionTypeElement yearElement=new TimeDimensionTypeElement(4,PeriodDataType.YEAR);
+	private static TimeDimensionTypeElement decadeElement=new TimeDimensionTypeElement(5,PeriodDataType.DECADE);
+	private static TimeDimensionTypeElement centuryElement=new TimeDimensionTypeElement(6,PeriodDataType.CENTURY);
+
 
 	public static ArrayList<TimeDimensionTypeElement> getTimeDimensionType(){
 		store=new ArrayList<TimeDimensionTypeElement>();
@@ -32,23 +35,33 @@ public class TimeDimensionTypeStore implements Serializable {
 		store.add(monthElement);
 		store.add(quarterElement);
 		store.add(yearElement);
+		store.add(decadeElement);
+		store.add(centuryElement);
 		return store;
 	}
 	
 	public static int selectedTimeDimensionPosition(String selected){
 		int position=0;
-		if(selected.compareTo(TimeDimensionType.Day.toString())==0){
+		if(selected.compareTo(PeriodDataType.DAY.toString())==0){
 			position=1;
 		} else {
-			if(selected.compareTo(TimeDimensionType.Month.toString())==0){
+			if(selected.compareTo(PeriodDataType.MONTH.toString())==0){
 				position=2;
 			} else {
-				if(selected.compareTo(TimeDimensionType.Quarter.toString())==0){
+				if(selected.compareTo(PeriodDataType.QUARTER.toString())==0){
 					position=3;
 				} else {
-					if(selected.compareTo(TimeDimensionType.Year.toString())==0){
+					if(selected.compareTo(PeriodDataType.YEAR.toString())==0){
 						position=4;
 					} else {
+						if(selected.compareTo(PeriodDataType.DECADE.toString())==0){
+							position=5;
+						} else {
+							if(selected.compareTo(PeriodDataType.CENTURY.toString())==0){
+								position=6;
+							} else {
+							}
+						}
 					}
 				}
 			}
@@ -57,40 +70,32 @@ public class TimeDimensionTypeStore implements Serializable {
 	}
 	
 	
-	public static TimeDimensionType selectedTimeDimension(String selected){
-		if(selected.compareTo(TimeDimensionType.Day.toString())==0){
-			return TimeDimensionType.Day;
-		} else {
-			if(selected.compareTo(TimeDimensionType.Month.toString())==0){
-				return TimeDimensionType.Month;
-			} else {
-				if(selected.compareTo(TimeDimensionType.Quarter.toString())==0){
-					return TimeDimensionType.Quarter;
-				} else {
-					if(selected.compareTo(TimeDimensionType.Year.toString())==0){
-						return TimeDimensionType.Year;
-					} else {
-						return null;
-					}
-				}
-			}
-		}
+	public static PeriodDataType selectedTimeDimension(String selected){
+		return PeriodDataType.getPeriodFromString(selected);
 	}
 	
 	public static TimeDimensionTypeElement selectedTimeDimensionElement(String selected){
-		if(selected.compareTo(TimeDimensionType.Day.toString())==0){
+		if(selected.compareTo(PeriodDataType.DAY.toString())==0){
 			return dayElement;
 		} else {
-			if(selected.compareTo(TimeDimensionType.Month.toString())==0){
+			if(selected.compareTo(PeriodDataType.MONTH.toString())==0){
 				return monthElement;
 			} else {
-				if(selected.compareTo(TimeDimensionType.Quarter.toString())==0){
+				if(selected.compareTo(PeriodDataType.QUARTER.toString())==0){
 					return quarterElement;
 				} else {
-					if(selected.compareTo(TimeDimensionType.Year.toString())==0){
+					if(selected.compareTo(PeriodDataType.YEAR.toString())==0){
 						return yearElement;
 					} else {
-						return null;
+						if(selected.compareTo(PeriodDataType.DECADE.toString())==0){
+							return decadeElement;
+						} else {
+							if(selected.compareTo(PeriodDataType.CENTURY.toString())==0){
+								return centuryElement;
+							} else {
+								return null;
+							}
+						}
 					}
 				}
 			}