diff --git a/screening/resource/test-data/FeatureVectorsDropboxTest/features.csv b/screening/resource/test-data/FeatureVectorsDropboxTest/features.csv
index c82d36b5b6907ad256e6f9a8364f01c0dcc9ac54..fec4f30d1a29a57ad53474ee79c66ec7873866b2 100644
--- a/screening/resource/test-data/FeatureVectorsDropboxTest/features.csv
+++ b/screening/resource/test-data/FeatureVectorsDropboxTest/features.csv
@@ -1,97 +1,97 @@
-barcode,Well,row number,column number,TPU,STATE
-PLATE-1,A1,1,1,0.0109905507275,UNSTABLE
-PLATE-1,A2,1,2,-0.0182003436984,UNSTABLE
-PLATE-1,A3,1,3,-0.00805361743168,STABLE
-PLATE-1,A4,1,4,0.0810000328417,STABLE
-PLATE-1,A5,1,5,0.0259230435927,STABLE
-PLATE-1,A6,1,6,-0.036430571554,UNSTABLE
-PLATE-1,A7,1,7,-0.0101872401882,UNSTABLE
-PLATE-1,A8,1,8,-0.00727317718048,STABLE
-PLATE-1,A9,1,9,0.0315700979161,STABLE
-PLATE-1,A10,1,10,0.168559091956,STABLE
-PLATE-1,A11,1,11,-0.0250794227724,STABLE
-PLATE-1,A12,1,12,0.257636061574,STABLE
-PLATE-1,B1,2,1,0.100434155899,STABLE
-PLATE-1,B2,2,2,0.0976115450765,UNSTABLE
-PLATE-1,B3,2,3,0.0864925097496,UNSTABLE
-PLATE-1,B4,2,4,0.0878168382557,STABLE
-PLATE-1,B5,2,5,0.00728303315339,STABLE
-PLATE-1,B6,2,6,0.00135844915617,UNSTABLE
-PLATE-1,B7,2,7,0.071667990849,UNSTABLE
-PLATE-1,B8,2,8,0.134576738033,STABLE
-PLATE-1,B9,2,9,0.062517688301,STABLE
-PLATE-1,B10,2,10,-0.0559872246124,STABLE
-PLATE-1,B11,2,11,-0.0619564845848,STABLE
-PLATE-1,B12,2,12,0.0324420596004,UNSTABLE
-PLATE-1,C1,3,1,0.206954055141,UNSTABLE
-PLATE-1,C2,3,2,0.19680434536,UNSTABLE
-PLATE-1,C3,3,3,0.229279401419,UNSTABLE
-PLATE-1,C4,3,4,0.193351284437,STABLE
-PLATE-1,C5,3,5,0.129062893555,STABLE
-PLATE-1,C6,3,6,0.126673623384,STABLE
-PLATE-1,C7,3,7,0.229037975734,STABLE
-PLATE-1,C8,3,8,0.223431359979,STABLE
-PLATE-1,C9,3,9,0.190028172309,STABLE
-PLATE-1,C10,3,10,-0.0674441033456,UNSTABLE
-PLATE-1,C11,3,11,0.0339637772352,STABLE
-PLATE-1,C12,3,12,0.164178194792,STABLE
-PLATE-1,D1,4,1,0.297974218656,UNSTABLE
-PLATE-1,D2,4,2,0.298059135512,STABLE
-PLATE-1,D3,4,3,0.350772745466,UNSTABLE
-PLATE-1,D4,4,4,0.313919901769,UNSTABLE
-PLATE-1,D5,4,5,0.252290578613,STABLE
-PLATE-1,D6,4,6,0.324830425263,UNSTABLE
-PLATE-1,D7,4,7,0.162928227992,STABLE
-PLATE-1,D8,4,8,0.265496427715,UNSTABLE
-PLATE-1,D9,4,9,0.123242462625,STABLE
-PLATE-1,D10,4,10,0.0156365936527,STABLE
-PLATE-1,D11,4,11,0.318001502397,STABLE
-PLATE-1,D12,4,12,0.20854731993,STABLE
-PLATE-1,E1,5,1,0.393536251276,UNSTABLE
-PLATE-1,E2,5,2,0.399605077357,STABLE
-PLATE-1,E3,5,3,0.433901537831,STABLE
-PLATE-1,E4,5,4,0.378871120619,UNSTABLE
-PLATE-1,E5,5,5,0.453098222167,STABLE
-PLATE-1,E6,5,6,0.308155666544,UNSTABLE
-PLATE-1,E7,5,7,0.45538138854,STABLE
-PLATE-1,E8,5,8,0.372161727461,STABLE
-PLATE-1,E9,5,9,0.308752403413,STABLE
-PLATE-1,E10,5,10,0.357322858215,UNSTABLE
-PLATE-1,E11,5,11,0.408261827863,UNSTABLE
-PLATE-1,E12,5,12,0.276512650311,UNSTABLE
-PLATE-1,F1,6,1,0.518565455665,UNSTABLE
-PLATE-1,F2,6,2,0.501353504253,UNSTABLE
-PLATE-1,F3,6,3,0.486441514218,UNSTABLE
-PLATE-1,F4,6,4,0.530701442681,STABLE
-PLATE-1,F5,6,5,0.526764248567,UNSTABLE
-PLATE-1,F6,6,6,0.535393254659,STABLE
-PLATE-1,F7,6,7,0.485971393901,STABLE
-PLATE-1,F8,6,8,0.446866206382,STABLE
-PLATE-1,F9,6,9,0.500105016099,STABLE
-PLATE-1,F10,6,10,0.572554837409,UNSTABLE
-PLATE-1,F11,6,11,0.421581223622,UNSTABLE
-PLATE-1,F12,6,12,0.566179719687,STABLE
-PLATE-1,G1,7,1,0.597014347164,STABLE
-PLATE-1,G2,7,2,0.595574322803,STABLE
-PLATE-1,G3,7,3,0.573275879833,UNSTABLE
-PLATE-1,G4,7,4,0.565598774935,UNSTABLE
-PLATE-1,G5,7,5,0.580255468506,UNSTABLE
-PLATE-1,G6,7,6,0.731126618477,UNSTABLE
-PLATE-1,G7,7,7,0.586449329876,STABLE
-PLATE-1,G8,7,8,0.504383391301,UNSTABLE
-PLATE-1,G9,7,9,0.57029228861,UNSTABLE
-PLATE-1,G10,7,10,0.571055758388,UNSTABLE
-PLATE-1,G11,7,11,0.729508274912,STABLE
-PLATE-1,G12,7,12,0.651282199669,UNSTABLE
-PLATE-1,H1,8,1,0.708336042851,UNSTABLE
-PLATE-1,H2,8,2,0.693510468853,STABLE
-PLATE-1,H3,8,3,0.680500191339,UNSTABLE
-PLATE-1,H4,8,4,0.682631399189,UNSTABLE
-PLATE-1,H5,8,5,0.771686970996,UNSTABLE
-PLATE-1,H6,8,6,0.592031721228,STABLE
-PLATE-1,H7,8,7,0.683612608169,STABLE
-PLATE-1,H8,8,8,0.632227578807,UNSTABLE
-PLATE-1,H9,8,9,0.90031946922,UNSTABLE
-PLATE-1,H10,8,10,0.750539227015,STABLE
-PLATE-1,H11,8,11,0.826335733676,UNSTABLE
-PLATE-1,H12,8,12,0.467946755513,UNSTABLE
+barcode,Well,row number,column number,TPU,STATE, Z_VERY_LONG_FEATURE_LONGER_THAN_80_CHARS_123456789012345678901234567890123456789012345678901234567890
+PLATE-1,A1,1,1,0.0109905507275,UNSTABLE, 0
+PLATE-1,A2,1,2,-0.0182003436984,UNSTABLE, 0
+PLATE-1,A3,1,3,-0.00805361743168,STABLE, 0
+PLATE-1,A4,1,4,0.0810000328417,STABLE, 0
+PLATE-1,A5,1,5,0.0259230435927,STABLE, 0
+PLATE-1,A6,1,6,-0.036430571554,UNSTABLE, 0
+PLATE-1,A7,1,7,-0.0101872401882,UNSTABLE, 0
+PLATE-1,A8,1,8,-0.00727317718048,STABLE, 0
+PLATE-1,A9,1,9,0.0315700979161,STABLE, 0
+PLATE-1,A10,1,10,0.168559091956,STABLE, 0
+PLATE-1,A11,1,11,-0.0250794227724,STABLE, 0
+PLATE-1,A12,1,12,0.257636061574,STABLE, 0
+PLATE-1,B1,2,1,0.100434155899,STABLE, 0
+PLATE-1,B2,2,2,0.0976115450765,UNSTABLE, 0
+PLATE-1,B3,2,3,0.0864925097496,UNSTABLE, 0
+PLATE-1,B4,2,4,0.0878168382557,STABLE, 0
+PLATE-1,B5,2,5,0.00728303315339,STABLE, 0
+PLATE-1,B6,2,6,0.00135844915617,UNSTABLE, 0
+PLATE-1,B7,2,7,0.071667990849,UNSTABLE, 0
+PLATE-1,B8,2,8,0.134576738033,STABLE, 0
+PLATE-1,B9,2,9,0.062517688301,STABLE, 0
+PLATE-1,B10,2,10,-0.0559872246124,STABLE, 0
+PLATE-1,B11,2,11,-0.0619564845848,STABLE, 0
+PLATE-1,B12,2,12,0.0324420596004,UNSTABLE, 0
+PLATE-1,C1,3,1,0.206954055141,UNSTABLE, 0
+PLATE-1,C2,3,2,0.19680434536,UNSTABLE, 0
+PLATE-1,C3,3,3,0.229279401419,UNSTABLE, 0
+PLATE-1,C4,3,4,0.193351284437,STABLE, 0
+PLATE-1,C5,3,5,0.129062893555,STABLE, 0
+PLATE-1,C6,3,6,0.126673623384,STABLE, 0
+PLATE-1,C7,3,7,0.229037975734,STABLE, 0
+PLATE-1,C8,3,8,0.223431359979,STABLE, 0
+PLATE-1,C9,3,9,0.190028172309,STABLE, 0
+PLATE-1,C10,3,10,-0.0674441033456,UNSTABLE, 0
+PLATE-1,C11,3,11,0.0339637772352,STABLE, 0
+PLATE-1,C12,3,12,0.164178194792,STABLE, 0
+PLATE-1,D1,4,1,0.297974218656,UNSTABLE, 0
+PLATE-1,D2,4,2,0.298059135512,STABLE, 0
+PLATE-1,D3,4,3,0.350772745466,UNSTABLE, 0
+PLATE-1,D4,4,4,0.313919901769,UNSTABLE, 0
+PLATE-1,D5,4,5,0.252290578613,STABLE, 0
+PLATE-1,D6,4,6,0.324830425263,UNSTABLE, 0
+PLATE-1,D7,4,7,0.162928227992,STABLE, 0
+PLATE-1,D8,4,8,0.265496427715,UNSTABLE, 0
+PLATE-1,D9,4,9,0.123242462625,STABLE, 0
+PLATE-1,D10,4,10,0.0156365936527,STABLE, 0
+PLATE-1,D11,4,11,0.318001502397,STABLE, 0
+PLATE-1,D12,4,12,0.20854731993,STABLE, 0
+PLATE-1,E1,5,1,0.393536251276,UNSTABLE, 0
+PLATE-1,E2,5,2,0.399605077357,STABLE, 0
+PLATE-1,E3,5,3,0.433901537831,STABLE, 0
+PLATE-1,E4,5,4,0.378871120619,UNSTABLE, 0
+PLATE-1,E5,5,5,0.453098222167,STABLE, 0
+PLATE-1,E6,5,6,0.308155666544,UNSTABLE, 0
+PLATE-1,E7,5,7,0.45538138854,STABLE, 0
+PLATE-1,E8,5,8,0.372161727461,STABLE, 0
+PLATE-1,E9,5,9,0.308752403413,STABLE, 0
+PLATE-1,E10,5,10,0.357322858215,UNSTABLE, 0
+PLATE-1,E11,5,11,0.408261827863,UNSTABLE, 0
+PLATE-1,E12,5,12,0.276512650311,UNSTABLE, 0
+PLATE-1,F1,6,1,0.518565455665,UNSTABLE, 0
+PLATE-1,F2,6,2,0.501353504253,UNSTABLE, 0
+PLATE-1,F3,6,3,0.486441514218,UNSTABLE, 0
+PLATE-1,F4,6,4,0.530701442681,STABLE, 0
+PLATE-1,F5,6,5,0.526764248567,UNSTABLE, 0
+PLATE-1,F6,6,6,0.535393254659,STABLE, 0
+PLATE-1,F7,6,7,0.485971393901,STABLE, 0
+PLATE-1,F8,6,8,0.446866206382,STABLE, 0
+PLATE-1,F9,6,9,0.500105016099,STABLE, 0
+PLATE-1,F10,6,10,0.572554837409,UNSTABLE, 0
+PLATE-1,F11,6,11,0.421581223622,UNSTABLE, 0
+PLATE-1,F12,6,12,0.566179719687,STABLE, 0
+PLATE-1,G1,7,1,0.597014347164,STABLE, 0
+PLATE-1,G2,7,2,0.595574322803,STABLE, 0
+PLATE-1,G3,7,3,0.573275879833,UNSTABLE, 0
+PLATE-1,G4,7,4,0.565598774935,UNSTABLE, 0
+PLATE-1,G5,7,5,0.580255468506,UNSTABLE, 0
+PLATE-1,G6,7,6,0.731126618477,UNSTABLE, 0
+PLATE-1,G7,7,7,0.586449329876,STABLE, 0
+PLATE-1,G8,7,8,0.504383391301,UNSTABLE, 0
+PLATE-1,G9,7,9,0.57029228861,UNSTABLE, 0
+PLATE-1,G10,7,10,0.571055758388,UNSTABLE, 0
+PLATE-1,G11,7,11,0.729508274912,STABLE, 0
+PLATE-1,G12,7,12,0.651282199669,UNSTABLE, 0
+PLATE-1,H1,8,1,0.708336042851,UNSTABLE, 0
+PLATE-1,H2,8,2,0.693510468853,STABLE, 0
+PLATE-1,H3,8,3,0.680500191339,UNSTABLE, 0
+PLATE-1,H4,8,4,0.682631399189,UNSTABLE, 0
+PLATE-1,H5,8,5,0.771686970996,UNSTABLE, 0
+PLATE-1,H6,8,6,0.592031721228,STABLE, 0
+PLATE-1,H7,8,7,0.683612608169,STABLE, 0
+PLATE-1,H8,8,8,0.632227578807,UNSTABLE, 0
+PLATE-1,H9,8,9,0.90031946922,UNSTABLE, 0
+PLATE-1,H10,8,10,0.750539227015,STABLE, 0
+PLATE-1,H11,8,11,0.826335733676,UNSTABLE, 0
+PLATE-1,H12,8,12,0.467946755513,UNSTABLE, 0
diff --git a/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/ImagingDatabaseVersionHolder.java b/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/ImagingDatabaseVersionHolder.java
index 949036400c582cfd69d71a8d7a880d315ffe183c..8dfdfb31dbe2a0aecef290dc2096fb61f4ac0a9b 100644
--- a/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/ImagingDatabaseVersionHolder.java
+++ b/screening/source/java/ch/systemsx/cisd/openbis/dss/etl/ImagingDatabaseVersionHolder.java
@@ -28,6 +28,6 @@ public class ImagingDatabaseVersionHolder implements IDatabaseVersionHolder
     @Override
     public String getDatabaseVersion()
     {
-        return "022"; // changed in S129
+        return "023"; // changed in S153
     }
 }
diff --git a/screening/source/sql/imaging/postgresql/023/schema-023.sql b/screening/source/sql/imaging/postgresql/023/schema-023.sql
new file mode 100644
index 0000000000000000000000000000000000000000..f08d694fcc0d1d58071c9206904311a3cf8a6109
--- /dev/null
+++ b/screening/source/sql/imaging/postgresql/023/schema-023.sql
@@ -0,0 +1,425 @@
+
+/* ---------------------------------------------------------------------- */
+/* Domains                                                                */
+/* ---------------------------------------------------------------------- */
+
+CREATE DOMAIN TECH_ID AS BIGINT;
+
+CREATE DOMAIN CODE AS VARCHAR(40);
+
+CREATE DOMAIN LONG_NAME AS TEXT;
+
+CREATE DOMAIN DESCRIPTION AS VARCHAR(200);
+
+CREATE DOMAIN FILE_PATH as VARCHAR(1000);
+
+CREATE DOMAIN COLOR_COMPONENT AS VARCHAR(40) CHECK (VALUE IN ('RED', 'GREEN', 'BLUE'));
+
+CREATE DOMAIN CHANNEL_COLOR AS VARCHAR(20) CHECK (VALUE IN ('BLUE', 'GREEN', 'RED', 'RED_GREEN', 'RED_BLUE', 'GREEN_BLUE'));
+ 
+CREATE DOMAIN BOOLEAN_CHAR AS BOOLEAN DEFAULT FALSE;
+
+/* ---------------------------------------------------------------------- */
+/* Tables                                                                 */
+/* ---------------------------------------------------------------------- */
+
+CREATE TABLE EXPERIMENTS (
+  ID BIGSERIAL NOT NULL,
+  PERM_ID CODE NOT NULL,
+  IMAGE_TRANSFORMER_FACTORY BYTEA,
+
+  PRIMARY KEY (ID),
+  UNIQUE (PERM_ID)
+);
+
+CREATE TABLE CONTAINERS (
+  ID BIGSERIAL NOT NULL,
+  PERM_ID CODE NOT NULL,
+
+  SPOTS_WIDTH INTEGER,
+  SPOTS_HEIGHT INTEGER,
+  
+  EXPE_ID TECH_ID NOT NULL,
+
+  PRIMARY KEY (ID),
+  UNIQUE (PERM_ID),
+  CONSTRAINT FK_SAMPLE_1 FOREIGN KEY (EXPE_ID) REFERENCES EXPERIMENTS (ID) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX CONTAINERS_EXPE_IDX ON CONTAINERS(EXPE_ID);
+
+CREATE TABLE SPOTS (
+  ID BIGSERIAL NOT NULL,
+	
+	-- position in the container, one-based
+  X INTEGER, 
+  Y INTEGER, 
+  CONT_ID TECH_ID NOT NULL,
+  
+  PRIMARY KEY (ID),
+  CONSTRAINT FK_SPOT_1 FOREIGN KEY (CONT_ID) REFERENCES CONTAINERS (ID) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX SPOTS_CONT_IDX ON SPOTS(CONT_ID);
+-- allows to select one spot of the container quicker
+CREATE INDEX SPOTS_COORDS_IDX ON SPOTS(CONT_ID, X, Y);
+
+CREATE TABLE ANALYSIS_DATA_SETS (
+  ID BIGSERIAL NOT NULL,
+  PERM_ID CODE NOT NULL,
+
+  CONT_ID TECH_ID,
+  
+  PRIMARY KEY (ID),
+  UNIQUE (PERM_ID),
+  CONSTRAINT FK_ANALYSIS_DATA_SET_1 FOREIGN KEY (CONT_ID) REFERENCES CONTAINERS (ID) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX ANALYSIS_DATA_SETS_CONT_IDX ON ANALYSIS_DATA_SETS(CONT_ID);
+
+
+CREATE TABLE IMAGE_DATA_SETS (
+  ID BIGSERIAL NOT NULL,
+  PERM_ID CODE NOT NULL,
+
+  ---- image dataset specific fields (should be refactored) 
+	FIELDS_WIDTH INTEGER,
+	FIELDS_HEIGHT INTEGER,	
+  -- transformation for merged channels on the dataset level, overrides experiment level transformation
+  IMAGE_TRANSFORMER_FACTORY BYTEA,
+  -- a redundant information if there are timepoint or depth stack data for any spots in this dataset
+  IS_MULTIDIMENSIONAL BOOLEAN_CHAR NOT NULL,
+
+  -- Which image library should be used to read the image? 
+  -- If not specified, some heuristics are used, but it is slower and does not try with all the available libraries. 
+  IMAGE_LIBRARY_NAME LONG_NAME,
+  -- Which reader in the library should be used? Valid only if the library LONG_NAME is specified.
+  -- Should be specified when library LONG_NAME is specified.
+  IMAGE_LIBRARY_READER_NAME LONG_NAME,
+  ---- END image dataset specific fields
+  
+  CONT_ID TECH_ID,
+  
+  PRIMARY KEY (ID),
+  UNIQUE (PERM_ID),
+  CONSTRAINT FK_IMAGE_DATA_SET_1 FOREIGN KEY (CONT_ID) REFERENCES CONTAINERS (ID) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX IMAGE_DATA_SETS_CONT_IDX ON IMAGE_DATA_SETS(CONT_ID);
+
+CREATE TABLE CHANNELS (
+    ID BIGSERIAL  NOT NULL,
+    
+    CODE LONG_NAME NOT NULL,
+    LABEL LONG_NAME NOT NULL,
+    DESCRIPTION DESCRIPTION,
+    WAVELENGTH INTEGER,
+
+    -- RGB color components specify the color in which channel should be displayed
+    RED_CC INTEGER NOT NULL,
+    GREEN_CC INTEGER NOT NULL,
+    BLUE_CC INTEGER NOT NULL,
+
+    DS_ID TECH_ID,
+    EXP_ID TECH_ID,
+    
+    PRIMARY KEY (ID),
+    CONSTRAINT FK_CHANNELS_1 FOREIGN KEY (DS_ID) REFERENCES IMAGE_DATA_SETS (ID) ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT FK_CHANNELS_2 FOREIGN KEY (EXP_ID) REFERENCES EXPERIMENTS (ID) ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT CHANNELS _DS_EXP_ARC_CK CHECK ((DS_ID IS NOT NULL AND EXP_ID IS NULL) OR (DS_ID IS NULL AND EXP_ID IS NOT NULL)),
+    
+    CONSTRAINT CHANNELS_UK_1 UNIQUE(CODE, DS_ID),
+    CONSTRAINT CHANNELS_UK_2 UNIQUE(CODE, EXP_ID)
+);
+
+CREATE INDEX CHANNELS_DS_IDX ON CHANNELS(DS_ID);
+
+CREATE TABLE IMAGE_TRANSFORMATIONS (
+    ID BIGSERIAL  NOT NULL,
+    
+    CODE LONG_NAME NOT NULL,
+    LABEL LONG_NAME NOT NULL,
+    DESCRIPTION character varying(1000),
+    IMAGE_TRANSFORMER_FACTORY BYTEA NOT NULL,
+    
+    -- For now there can be only one transformation for each channel which is editable by Image Viewer,
+    -- but when GUI will support more then this column will become really useful.
+    IS_EDITABLE BOOLEAN_CHAR NOT NULL,
+    
+    -- The default choice to present the image.
+    -- If not present a 'hard-coded' default transformation will become available. 
+    IS_DEFAULT BOOLEAN_CHAR NOT NULL DEFAULT 'F',
+    
+    CHANNEL_ID TECH_ID NOT NULL,
+    
+    PRIMARY KEY (ID),
+    CONSTRAINT FK_IMAGE_TRANSFORMATIONS_CHANNEL FOREIGN KEY (CHANNEL_ID) REFERENCES CHANNELS (ID) ON DELETE CASCADE ON UPDATE CASCADE,
+    
+    CONSTRAINT IMAGE_TRANSFORMATIONS_UK_1 UNIQUE(CODE, CHANNEL_ID)
+);
+
+CREATE INDEX IMAGE_TRANSFORMATIONS_CHANNELS_IDX ON IMAGE_TRANSFORMATIONS(CHANNEL_ID);
+
+CREATE TABLE IMAGE_ZOOM_LEVELS (
+  ID BIGSERIAL NOT NULL,
+
+  IS_ORIGINAL BOOLEAN_CHAR NOT NULL,
+  CONTAINER_DATASET_ID TECH_ID NOT NULL, 
+  
+  -- Perm id of the 'physical' dataset which contains all images with this zoom.
+  -- Physical datasets are not stored in "image_data_sets" table, but we need the reference to them 
+  -- when we delete or archive one zoom level. 
+  PHYSICAL_DATASET_PERM_ID TEXT NOT NULL,
+  
+  PATH FILE_PATH,
+  WIDTH INTEGER,
+  HEIGHT INTEGER,
+  COLOR_DEPTH INTEGER,
+  FILE_TYPE VARCHAR(20),
+  
+  PRIMARY KEY (ID),
+  CONSTRAINT FK_IMAGE_ZOOM_LEVELS_1 FOREIGN KEY (CONTAINER_DATASET_ID) REFERENCES IMAGE_DATA_SETS (ID) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX IMAGE_ZOOM_LEVELS_PHYS_DS_IDX ON IMAGE_ZOOM_LEVELS (PHYSICAL_DATASET_PERM_ID);
+CREATE INDEX IMAGE_ZOOM_LEVELS_CONT_FK_IDX ON IMAGE_ZOOM_LEVELS (CONTAINER_DATASET_ID);
+
+CREATE TABLE IMAGE_ZOOM_LEVEL_TRANSFORMATIONS (
+	ID BIGSERIAL NOT NULL,
+	
+  ZOOM_LEVEL_ID TECH_ID NOT NULL,
+  CHANNEL_ID TECH_ID NOT NULL,
+  IMAGE_TRANSFORMATION_ID TECH_ID NOT NULL,
+  
+  PRIMARY KEY(ID),
+  CONSTRAINT FK_IMAGE_ZOOM_LEVEL_TRANSFORMATIONS_1 FOREIGN KEY (ZOOM_LEVEL_ID) REFERENCES IMAGE_ZOOM_LEVELS (ID) ON DELETE CASCADE ON UPDATE CASCADE,
+  CONSTRAINT FK_IMAGE_ZOOM_LEVEL_TRANSFORMATIONS_2 FOREIGN KEY (CHANNEL_ID) REFERENCES CHANNELS (ID) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX IMAGE_ZOOM_LEVEL_TRANSFORMATIONS_ZLID_IDX ON IMAGE_ZOOM_LEVEL_TRANSFORMATIONS(ZOOM_LEVEL_ID);
+
+CREATE TABLE CHANNEL_STACKS (
+    ID BIGSERIAL  NOT NULL,
+		
+		-- x and y are kind of a two dimensional sequence number, some use case may only use x and leave y alone
+		X INTEGER,
+		Y INTEGER,
+		-- We use the fixed dimension meters here.
+		Z_in_M REAL,
+		-- We use the fixed dimension seconds here.
+		T_in_SEC REAL,
+		SERIES_NUMBER INTEGER,
+		
+		-- For all channel stacks of a well (HCS) or image dataset (microscopy) there should be exactly 
+		-- one record with is_representative = true
+		is_representative BOOLEAN_CHAR NOT NULL DEFAULT 'F',
+    
+    DS_ID TECH_ID	NOT NULL,
+		SPOT_ID TECH_ID,
+
+    PRIMARY KEY (ID),
+    CONSTRAINT FK_CHANNEL_STACKS_1 FOREIGN KEY (SPOT_ID) REFERENCES SPOTS (ID) ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT FK_CHANNEL_STACKS_2 FOREIGN KEY (DS_ID) REFERENCES IMAGE_DATA_SETS (ID) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX CHANNEL_STACKS_DS_IDX ON CHANNEL_STACKS(DS_ID);
+CREATE INDEX CHANNEL_STACKS_SPOT_IDX ON CHANNEL_STACKS(SPOT_ID);
+CREATE INDEX CHANNEL_STACKS_DIM_IDX ON CHANNEL_STACKS(X, Y, Z_in_M, T_in_SEC);
+
+CREATE TABLE IMAGES (
+    ID BIGSERIAL  NOT NULL,
+   
+    PATH	FILE_PATH NOT NULL,
+    IMAGE_ID	CODE,
+    COLOR	COLOR_COMPONENT,
+    
+    PRIMARY KEY (ID)
+);
+
+CREATE TABLE ACQUIRED_IMAGES (
+    ID BIGSERIAL  NOT NULL,
+   
+		IMG_ID TECH_ID,
+		THUMBNAIL_ID TECH_ID,
+		IMAGE_TRANSFORMER_FACTORY BYTEA,
+
+    CHANNEL_STACK_ID  TECH_ID NOT NULL,
+    CHANNEL_ID  TECH_ID NOT NULL,
+
+    PRIMARY KEY (ID),
+    CONSTRAINT FK_IMAGES_1 FOREIGN KEY (CHANNEL_STACK_ID) REFERENCES CHANNEL_STACKS (ID) ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT FK_IMAGES_2 FOREIGN KEY (CHANNEL_ID) REFERENCES CHANNELS (ID) ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT FK_IMAGES_3 FOREIGN KEY (IMG_ID) REFERENCES IMAGES (ID) ON DELETE SET NULL ON UPDATE CASCADE,
+    CONSTRAINT FK_IMAGES_4 FOREIGN KEY (THUMBNAIL_ID) REFERENCES IMAGES (ID) ON DELETE SET NULL ON UPDATE CASCADE
+);
+
+CREATE INDEX IMAGES_CHANNEL_STACK_IDX ON ACQUIRED_IMAGES(CHANNEL_STACK_ID);
+CREATE INDEX IMAGES_CHANNEL_IDX ON ACQUIRED_IMAGES(CHANNEL_ID);
+CREATE INDEX IMAGES_IMG_IDX ON ACQUIRED_IMAGES(IMG_ID);
+CREATE INDEX IMAGES_THUMBNAIL_IDX ON ACQUIRED_IMAGES(THUMBNAIL_ID);
+
+CREATE TABLE EVENTS (
+  LAST_SEEN_DELETION_EVENT_ID TECH_ID NOT NULL
+);
+
+/* ---------------------------------------------------------------------- */
+/* FEATURE VECTORS                                                        */
+/* ---------------------------------------------------------------------- */ 
+
+CREATE TABLE FEATURE_DEFS (
+    ID BIGSERIAL  NOT NULL,
+    
+    CODE LONG_NAME NOT NULL,
+    LABEL LONG_NAME NOT NULL,
+    DESCRIPTION DESCRIPTION,
+    
+    DS_ID  TECH_ID NOT NULL,
+    
+    PRIMARY KEY (ID),
+    CONSTRAINT FK_FEATURE_DEFS_1 FOREIGN KEY (DS_ID) REFERENCES ANALYSIS_DATA_SETS (ID) ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT FEATURE_DEFS_UK_1 UNIQUE(CODE, DS_ID)
+);
+
+CREATE INDEX FEATURE_DEFS_DS_IDX ON FEATURE_DEFS(DS_ID);
+
+CREATE TABLE FEATURE_VOCABULARY_TERMS (
+	ID BIGSERIAL  NOT NULL,
+
+  CODE LONG_NAME NOT NULL,
+  SEQUENCE_NUMBER INTEGER NOT NULL,
+	FD_ID  TECH_ID NOT NULL,
+
+	PRIMARY KEY (ID),
+	CONSTRAINT FK_FEATURE_VOCABULARY_TERMS_1 FOREIGN KEY (FD_ID) REFERENCES FEATURE_DEFS (ID) ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX FEATURE_VOCABULARY_TERMS_FD_IDX ON FEATURE_VOCABULARY_TERMS(FD_ID);
+
+CREATE TABLE FEATURE_VALUES (
+    ID BIGSERIAL  NOT NULL,
+		
+		-- we use the fixed dimension meters here
+		Z_in_M REAL,
+		-- we use the fixed dimension seconds here
+		T_in_SEC REAL,
+		-- Serialized 2D matrix with values for each spot.
+		-- Contains floats which can be NaN. 
+		-- It is never a case that the whole matrix contains NaN - in such a case we save nothing.
+		-- If feature definition has some connected vocabulary terms then the matrix 
+		-- stores FEATURE_VOCABULARY_TERMS.SEQUENCE_NUMBER of the terms (should be casted from float to int).
+		-- If the term is null the Float.NaN is stored.
+		VALUES BYTEA NOT NULL,
+		
+		FD_ID  TECH_ID NOT NULL,
+		
+		PRIMARY KEY (ID),
+		CONSTRAINT FK_FEATURE_VALUES_1 FOREIGN KEY (FD_ID) REFERENCES FEATURE_DEFS (ID) ON DELETE CASCADE ON UPDATE CASCADE
+    -- This constaint does not make any sense. Leave it out for now.
+    -- CONSTRAINT FEATURE_VALUES_UK_1 UNIQUE(Z_in_M, T_in_SEC)
+);
+
+CREATE INDEX FEATURE_VALUES_FD_IDX ON FEATURE_VALUES(FD_ID);
+CREATE INDEX FEATURE_VALUES_Z_AND_T_IDX ON FEATURE_VALUES(Z_in_M, T_in_SEC);
+
+
+/* ---------------------------------------------------------------------- */
+/* FUNCTIONS AND TRIGGERS                                                 */
+/* ---------------------------------------------------------------------- */ 
+
+CREATE OR REPLACE FUNCTION DELETE_UNUSED_IMAGES() RETURNS trigger AS $$
+BEGIN
+   delete from images where id = OLD.img_id or id = OLD.thumbnail_id;
+   RETURN NEW;
+END;
+$$ LANGUAGE 'plpgsql';
+
+CREATE TRIGGER UNUSED_IMAGES AFTER DELETE ON ACQUIRED_IMAGES
+    FOR EACH ROW EXECUTE PROCEDURE DELETE_UNUSED_IMAGES();
+
+CREATE OR REPLACE FUNCTION DELETE_UNUSED_NULLED_IMAGES() RETURNS trigger AS $$
+BEGIN
+	if NEW.img_id IS NULL then
+		if OLD.img_id IS NOT NULL then
+		  delete from images where id = OLD.img_id;
+		end if;
+	end if;
+	if NEW.thumbnail_id IS NULL then
+		if OLD.thumbnail_id IS NOT NULL then
+		  delete from images where id = OLD.thumbnail_id;
+		end if;
+	end if;
+	RETURN NEW;
+END;
+$$ LANGUAGE 'plpgsql';
+
+CREATE TRIGGER UNUSED_NULLED_IMAGES AFTER UPDATE ON ACQUIRED_IMAGES
+    FOR EACH ROW EXECUTE PROCEDURE DELETE_UNUSED_NULLED_IMAGES();
+
+CREATE OR REPLACE FUNCTION DELETE_EMPTY_ACQUIRED_IMAGES() RETURNS trigger AS $$
+BEGIN
+	delete from acquired_images where id = OLD.id;
+	RETURN NEW;
+END;
+$$ LANGUAGE 'plpgsql';
+
+CREATE TRIGGER EMPTY_ACQUIRED_IMAGES BEFORE UPDATE ON ACQUIRED_IMAGES
+		FOR EACH ROW
+		WHEN (NEW.img_id IS NULL AND NEW.thumbnail_id IS NULL)
+		EXECUTE PROCEDURE DELETE_EMPTY_ACQUIRED_IMAGES();
+
+
+------------------------------------------------------------------------------------
+--  Purpose:  Create trigger CHANNEL_STACKS_CHECK which checks if both spot_id and dataset.cont_id 
+--            are both null or not null.
+------------------------------------------------------------------------------------
+
+CREATE OR REPLACE FUNCTION CHANNEL_STACKS_CHECK() RETURNS trigger AS $$
+DECLARE
+   v_cont_id  CODE;
+BEGIN
+
+   select cont_id into v_cont_id from image_data_sets where id = NEW.ds_id;
+
+   -- Check that if there is no spot than there is no dataset container as well
+   if v_cont_id IS NULL then
+      if NEW.spot_id IS NOT NULL then
+         RAISE EXCEPTION 'Insert/Update of CHANNEL_STACKS failed, as the dataset container is not set, but spot is (spot id = %).',NEW.spot_id;
+      end if;
+	 else
+      if NEW.spot_id IS NULL then
+         RAISE EXCEPTION 'Insert/Update of CHANNEL_STACKS failed, as the dataset container is set (id = %), but spot is not set.',v_cont_id;
+      end if; 
+   end if;
+   RETURN NEW;
+END;
+$$ LANGUAGE 'plpgsql';
+
+CREATE TRIGGER CHANNEL_STACKS_CHECK BEFORE INSERT OR UPDATE ON CHANNEL_STACKS
+    FOR EACH ROW EXECUTE PROCEDURE CHANNEL_STACKS_CHECK();
+    
+------------------------------------------------------------------------------------
+--  Purpose:  Create trigger IMAGE_TRANSFORMATIONS_DEFAULT_CHECK which checks 
+--            if at most one channel's transformation is default
+------------------------------------------------------------------------------------
+
+CREATE OR REPLACE FUNCTION IMAGE_TRANSFORMATIONS_DEFAULT_CHECK() RETURNS trigger AS $$
+DECLARE
+   v_is_default boolean;
+BEGIN
+   if NEW.is_default = 'T' then
+	   select is_default into v_is_default from IMAGE_TRANSFORMATIONS 
+	   	where is_default = 'T' 
+	   			  and channel_id = NEW.channel_id
+	   				and id != NEW.id;
+	   if v_is_default is NOT NULL then
+	      RAISE EXCEPTION 'Insert/Update of image transformation (Code: %) failed, as the new record has is_default set to true and there is already a default record defined.', NEW.code;
+	   end if;
+   end if;
+
+   RETURN NEW;
+END;
+$$ LANGUAGE 'plpgsql';
+
+CREATE TRIGGER IMAGE_TRANSFORMATIONS_DEFAULT_CHECK BEFORE INSERT OR UPDATE ON IMAGE_TRANSFORMATIONS
+    FOR EACH ROW EXECUTE PROCEDURE IMAGE_TRANSFORMATIONS_DEFAULT_CHECK();
+    
\ No newline at end of file
diff --git a/screening/source/sql/imaging/postgresql/migration/migration-022-023.sql b/screening/source/sql/imaging/postgresql/migration/migration-022-023.sql
new file mode 100644
index 0000000000000000000000000000000000000000..fff0c987a5e58e5252e70e075c390608ebfa824f
--- /dev/null
+++ b/screening/source/sql/imaging/postgresql/migration/migration-022-023.sql
@@ -0,0 +1,22 @@
+-- Migration from 022 to 023
+
+CREATE DOMAIN LONG_NAME AS TEXT;
+
+ALTER TABLE IMAGE_DATA_SETS
+  ALTER COLUMN IMAGE_LIBRARY_NAME type LONG_NAME,
+  ALTER COLUMN IMAGE_LIBRARY_READER_NAME type LONG_NAME;
+
+ALTER TABLE CHANNELS
+  ALTER COLUMN CODE TYPE LONG_NAME,
+  ALTER COLUMN LABEL TYPE LONG_NAME;
+
+ALTER TABLE IMAGE_TRANSFORMATIONS
+  ALTER COLUMN CODE TYPE LONG_NAME,
+  ALTER COLUMN LABEL TYPE LONG_NAME;
+  
+ALTER TABLE FEATURE_DEFS
+  ALTER COLUMN CODE TYPE LONG_NAME,
+  ALTER COLUMN LABEL TYPE LONG_NAME;
+
+ALTER TABLE FEATURE_VOCABULARY_TERMS
+  ALTER COLUMN CODE TYPE LONG_NAME;
\ No newline at end of file
diff --git a/screening/sourceTest/java/ch/systemsx/cisd/openbis/screening/systemtests/FeatureVectorsDropboxTest.java b/screening/sourceTest/java/ch/systemsx/cisd/openbis/screening/systemtests/FeatureVectorsDropboxTest.java
index 820fa0ead8861fc787e6365dbecd8b9da3f73e51..8fd4b3b162364813c0c300c4a33e8a3f7dc7b9c7 100644
--- a/screening/sourceTest/java/ch/systemsx/cisd/openbis/screening/systemtests/FeatureVectorsDropboxTest.java
+++ b/screening/sourceTest/java/ch/systemsx/cisd/openbis/screening/systemtests/FeatureVectorsDropboxTest.java
@@ -32,7 +32,6 @@ import org.testng.annotations.Test;
 
 import ch.systemsx.cisd.common.filesystem.FileUtilities;
 import ch.systemsx.cisd.common.servlet.SpringRequestContextProvider;
-import ch.systemsx.cisd.openbis.generic.server.util.TestInitializer;
 import ch.systemsx.cisd.openbis.generic.shared.util.TestInstanceHostUtils;
 import ch.systemsx.cisd.openbis.plugin.screening.client.api.v1.IScreeningOpenbisServiceFacade;
 import ch.systemsx.cisd.openbis.plugin.screening.client.api.v1.ScreeningOpenbisServiceFacade;
@@ -126,7 +125,9 @@ public class FeatureVectorsDropboxTest extends AbstractScreeningSystemTestCase
             availableFeatureCodes.add(availableFeature.getCode());
         }
         Collections.sort(availableFeatureCodes);
-        assertEquals("[COLUMN_NUMBER, ROW_NUMBER, STATE, TPU]", availableFeatureCodes.toString());
+        assertEquals(
+                "[COLUMN_NUMBER, ROW_NUMBER, STATE, TPU, Z_VERY_LONG_FEATURE_LONGER_THAN_80_CHARS_123456789012345678901234567890123456789012345678901234567890]",
+                availableFeatureCodes.toString());
 
         List<FeatureVectorDataset> featureVectorDatasets =
                 screeningFacade.loadFeatures(features, Collections.singletonList("TPU"));