if tableName == "":
print "you have to enter a name"
continue
currentDB = env.openDB(tableName)
if currentDB == False:
print "open database failed"
else:
if currentDB.schema.getIndexName() == "":
print "this table has no index, so please select add function"
continue
else:
if currentDB.updateRecord() == False:
print "the record is not legal"
continue
else:
env.closeDB(tableName)
print "update success"
elif instruction == 3:
tableName = raw_input("please enter table name : ")
if tableName == "":
print "you have to enter a name"
continue
currentDB = env.openDB(tableName)
if currentDB == False:
print "open database failed"
else:
if currentDB.addRecord() == False:
print "the record is not legal"
continue
else:
env.closeDB(tableName)
