• 1. 表示基数: denote the cardinality
• 2. 混合基数表示法: mixed radix notation
• 3. 基数表示法: radix numeration system

• 1.据诺基亚的执行副总裁特罗·奥耶佩拉（Tero Ojanpera）表示，巨大的顾客基数是诺基亚的重要优势。
  The huge customer base is a big advantage, according to Tero Ojanpera, an executive vice president at Nokia.
  dict.yoduao.com
• 2.COLCARDF(见图5中4)：列基数，表示评估的列中不同值的数目。
  COLCARDF (see number 4 in Figure 5) : column cardinality, which denotes the estimated number of distinct values in the column.
  dict.yoduao.com
• 3.CARDF(见图5中1)：表基数，表示表中总行数。
  CARDF (see number 1 in Figure 5) : table cardinality, which denotes the total number of rows in the table.
  dict.yoduao.com

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