@h.memoize
    def tcounts(self):
        df = pd.DataFrame([[t.name(), t.size()] for t in self.tables()], columns=["name", "size"])
        df.index = df.name
        return df
:return: a data frame containing the names and sizes for all tables
dataset/ETHPy150Open grundprinzip/pyxplorer/pyxplorer/manager.py/Database.tcounts