diff --git a/libs/fingerprint.py b/libs/fingerprint.py
index 04f64e5..489af1f 100644
--- a/libs/fingerprint.py
+++ b/libs/fingerprint.py
@@ -21,9 +21,11 @@ class DBSchema:
   def __init__(self):
     self.conn = None
     self.cur = None
+    self.dbName = ''
     self.tableNames = []
     self.tables = {}
-    self.jsonData = None
+    self.tablesJson = {}
+    # self.jsonData = None
     return
 
 
@@ -34,7 +36,8 @@ class DBSchema:
     except Exception, e:
       print e
       return -2
-    
+
+    self.dbName = filein
     # read database schema
     try:
       self.__readDatabase()
@@ -45,13 +48,34 @@ class DBSchema:
     return 1
 
 
-  def importDBSchema(self, filein):
+  def importJson(self, filein):
+    self.tables = __importDBSchema(filein)
+
+
+  def compareDBSchema(self, filein):
+    self.tablesJson = __importDBSchema(filein)
+    result = __DBSchemaCompare()
+    return result
+
+
+  def __importDBSchema(self, filein)
+    tables = {}
     try:
-      fh = open(fileout, "r")
-      self.jsonData = json.loads(fh)
+      fh = open(filein, "r")
+      jsonData = json.load(fh)
+      dbmt = jsonData['db-metadata']
+      tb = jsonData['tables']
+      keys = tb.keys()
+      for key in keys:
+        newTable = TableDefinition()
+        newTable.importTable(key, dbmt[key], tb[key])
+        tables[key] = newTable
+
     except Exception, e:
       print e
 
+    return tables
+
 
   def __openDB(self, filein):
     conn = sqlite3.connect(filein)
@@ -73,26 +97,34 @@ class DBSchema:
     for key in keys:
       print "[[ TABLE: <" + key + "> ]]"
       tableDef = self.tables[key]
-      print str(tableDef.SQLstr())
+      #print str(tableDef.SQLstr())
       tableDef.toJSON()
 
 
   def writeFingerprint(self, filehandle):
-    ahash = {}
-    thash = {}
-    mhash = {}
+    ahash  = {}
+    thash  = {}
+    mhash  = {}
+    dhash  = {}
+    dmhash = {}
     ahash['tables'] = thash
-    ahash['metadata'] = mhash
+    ahash['file-metadata'] = mhash
+    ahash['db-config']     = dhash
+    ahash['db-metadata']   = dmhash
 
     # metadata
-    mhash['app-name']   = 'dbfp'
-    mhash['app-ver']    = '0.50'
-    mhash['format-ver'] = '0.90'
+    mhash['scanner-name'] = 'dbfp'
+    mhash['scanner-ver']  = '0.50'
+    mhash['format-ver']   = '0.90'
+
+    # database configuration information
+    dhash['dn-name'] = self.dbName
 
     # tables
     keys = self.tables.keys()
     for key in keys:
       thash[key] = self.tables[key].fields
+      dmhash[key] = self.tables[key].SQLstr()
 
     json.dump(ahash, filehandle, sort_keys=True, indent=4)
 
@@ -138,6 +170,13 @@ class TableDefinition:
         if newField:
           self.fields[newField['name']] = newField
 
+
+  def importTable(self, tbName, sqlStr, fields):
+    self.tableName = tbName
+    self.sqlStr = sqlStr
+    self.fields = fields
+
+
   # Table Definition
   #
   #  CREATE TABLE contacts (_id INTEGER PRIMARY KEY AUTOINCREMENT,name_raw_contact_id INTEGER REFERENCES raw_contacts(_id),
@@ -275,6 +314,10 @@ class TableDefinition:
     return self.tableName
 
 
+  def setSQLstr(self, str):
+    return self.sqlStr
+
+
   def SQLstr(self):
     return self.sqlStr
 
diff --git a/main.py b/main.py
index b314896..d5d0634 100644
--- a/main.py
+++ b/main.py
@@ -8,13 +8,13 @@ from libs import fingerprint
 
 
 def main():
-  (filein, fileout, filejson, verbose) = parseArgs()
+  (filein, fileout2, filejson, verbose) = parseArgs()
 
   db = fingerprint.DBSchema()
-  if (fileout):
+  if (filein):
     retVal = db.scanDBFile(filein)
     if (retVal > 0):
-      fh = open(fileout, "w")
+      fh = open(fileout2, "w")
       db.debugFingerprint()
       db.writeFingerprint(fh)
       fh.close()
@@ -26,17 +26,25 @@ def main():
 
 
 def parseArgs():
-  verbose = False
+  print '***** ***** ***** *****'
+  print '   DB Fingerprint'
+  print '***** ***** ***** *****\n'
+  fileout1 = ''
   timestr = time.strftime('%Y-%m-%d_%H%M%S', time.localtime(time.time()))
   parser = argparse.ArgumentParser(description='Fingerprint a sqlite database based on its schema')
   parser.add_argument('-f', '--file', required=False)
   parser.add_argument('-j', '--json', required=False)
   parser.add_argument('-v', '--verbose', action='store_true')
   args = parser.parse_args()
-  if (args.verbose):
-    verbose = args.verbose
-  fileout = args.file + "_" + timestr + '.json'
-  return (args.file, fileout, args.json, verbose)
+
+  if (args.file is None) and (args.json is None):
+    parser.print_help()
+    exit()
+
+  if (args.file):
+    fileout1 = args.file + "_" + timestr + '.json'
+
+  return (args.file, fileout1, args.json, args.verbose)
 
 
 if __name__ == "__main__":