def METHOD_NAME(dbFile, tag):
    '''Check if there exists any IOV for a specific tag in the given sqlite file.'''
    dataConnection = sqlite3.connect(dbFile)
    dataCursor = dataConnection.cursor()
    dataCursor.execute('select SINCE from IOV where TAG_NAME=:tag_name', {'tag_name' : tag})
    return len(dataCursor.fetchall()) > 0