diff --git a/main/astrodatagui/db/StarsDB.py b/main/astrodatagui/db/StarsDB.py
index 172a9f4..b0edabf 100644
--- a/main/astrodatagui/db/StarsDB.py
+++ b/main/astrodatagui/db/StarsDB.py
@@ -1,6 +1,8 @@
 from enum import Enum
 import sqlite3
 
+supportedFitTypes = ["sine", "linear", "poly"]
+
 class StarDBError(Enum):
     NO_ERROR = 0
     DB_CONNECTION_FAILED = 1
@@ -87,6 +89,14 @@ class StarDB():
            FOREIGN KEY (mainName) REFERENCES starnames(mainName)
          );""")
 
+        self.dbCursor.execute("""CREATE TABLE IF NOT EXISTS starFitType
+         (
+           mainName TEXT,
+           fitType TEXT,
+           PRIMARY KEY (mainName),
+           FOREIGN KEY (mainName) REFERENCES starnames(mainName)
+         );""")
+
         self.insertDefaultValues()
         self.dbCorrection()
 
@@ -100,6 +110,9 @@ class StarDB():
         self.dbCursor.execute("""UPDATE stars
          SET filename = replace(filename, '\\', '/')
          WHERE filename LIKE '%\\%';""")
+        self.dbCursor.execute("""UPDATE starFitType
+         SET fitType = 'sine'
+         WHERE fitType IS NULL OR fitType = '';""")
 
 
     def insertDefaultValues(self):
@@ -140,6 +153,15 @@ class StarDB():
 
         self.connection.commit()
 
+    def updateFitType(self, mainName, fitType: str):
+        if(fitType in supportedFitTypes):
+            self.dbCursor.execute(f"""UPDATE starFitType
+                                     SET fitType = '{fitType}'
+                                     WHERE mainName = '{mainName}';""")
+            self.connection.commit()
+        else:
+            raise Exception(f"Fit type {fitType} not supported, must be one of {supportedFitTypes}")
+
     def getAllStars(self):
         res = self.dbCursor.execute("""SELECT DISTINCT mainName FROM stars
                                        ORDER BY mainName""")
@@ -188,3 +210,12 @@ class StarDB():
                                              sequence = {sequence}
                                               """)
         return res.fetchone()[0]
+
+    def getFitType(self, mainName):
+        res = self.dbCursor.execute(f"""SELECT mainName FROM starFitType
+                                        WHERE mainName = \"{mainName}\";""")
+        ret = res.fetchone()[0]
+        if(ret in supportedFitTypes):
+            return ret
+        else:
+            return "sine"
\ No newline at end of file