diff --git a/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/shared/basic/dto/ScreeningConstants.java b/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/shared/basic/dto/ScreeningConstants.java
index 7827083b057fc0dd67cc2511619f1d7f83bfc429..a78df3553c9b78d5143dad785153abe4ffc5f32f 100644
--- a/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/shared/basic/dto/ScreeningConstants.java
+++ b/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/shared/basic/dto/ScreeningConstants.java
@@ -92,6 +92,23 @@ public class ScreeningConstants
     public static final String MICROSCOPY_IMAGE_SAMPLE_TYPE_PATTERN =
             ANY_MICROSCOPY_IMAGE_DATASET_TYPE_PATTERN;
 
+    // --- Default dataset type codes for screening datasets
+
+    /** type of the new raw image dataset */
+    public static final String DEFAULT_RAW_IMAGE_DATASET_TYPE = "HCS_IMAGE_RAW";
+
+    /** type of the new overview image dataset */
+    public static final String DEFAULT_OVERVIEW_IMAGE_DATASET_TYPE = "HCS_IMAGE_OVERVIEW";
+
+    /** type of the new image segmentation (overlay) dataset */
+    public static final String DEFAULT_SEGMENTATION_IMAGE_DATASET_TYPE = "HCS_IMAGE_SEGMENTATION";
+
+    /** type of the new analysis dataset */
+    public static final String DEFAULT_ANALYSIS_DATASET_TYPE = "HCS_ANALYSIS_WELL_FEATURES ";
+
+    /** unknown file format code */
+    public static final String UNKNOWN_FILE_FORMAT = "UNKNOWN";
+
     // ----
 
     // code of plate geometry vocabulary