diff --git a/OVERVIEW.md b/OVERVIEW.md
index 3d3a62ab..8b324e21 100644
--- a/OVERVIEW.md
+++ b/OVERVIEW.md
@@ -46,6 +46,16 @@ ARDB_DB
 
 * DB 3 - Trending
 * DB 4 - Sentiment
+	----------------------------------------- SENTIMENT ------------------------------------
+
+	SET - 'Provider_set'				Provider
+		
+	KEY - 'UniqID' 					INT
+
+	SET - provider_timestamp			UniqID
+
+	SET - UniqID					avg_score
+
 * DB 5 - TermCred
 * DB 6 - Tags
 * DB 7 - Metadata
diff --git a/bin/SentimentAnalysis.py b/bin/SentimentAnalysis.py
index 8442befa..3a014050 100755
--- a/bin/SentimentAnalysis.py
+++ b/bin/SentimentAnalysis.py
@@ -45,6 +45,13 @@ cfg = configparser.ConfigParser()
 cfg.read(configfile)
 
 sentiment_lexicon_file = cfg.get("Directories", "sentiment_lexicon_file")
+time_clean_sentiment_db = 60*60
+
+def clean_db()
+    sevenDays = oneHour*24*7
+    dateStart = datetime.datetime.now()
+    dateStart = dateStart.replace(minute=0, second=0, microsecond=0)
+    dateStart_timestamp = calendar.timegm(dateStart.timetuple())
 
 def Analyse(message, server):
     path = message
@@ -157,12 +164,19 @@ if __name__ == '__main__':
         db=p.config.get("ARDB_Sentiment", "db"),
         decode_responses=True)
 
+    time1 = time.time()
+
     while True:
         message = p.get_from_set()
         if message is None:
-            publisher.debug("{} queue is empty, waiting".format(config_section))
-            time.sleep(1)
-            continue
+            if int(time.time() - time1) > time_clean_sentiment_db:
+                clean_db()
+                time1 = time.time()
+                continue
+            else:
+                publisher.debug("{} queue is empty, waiting".format(config_section))
+                time.sleep(1)
+                continue
         signal.alarm(60)
         try:
             Analyse(message, server)