Abstract: the data redundant in relational database is caused by the reduplication of the table, attribute, record, or attribute value.

文摘：关系数据库的数据冗余形成的原因有表的重复、属性的重复、元组的重复、属性值的重复。

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ABSTRACT: Italian sparkling wines reach a new record in holiday season. The sales of home and abroad are more than the last year's sales.

摘要：意大利在节假日期间起泡酒的销售数量创下新高，国内外销售额均多于去年。

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ABSTRACT: Sales of Rioja reached 277 million litres in 2013, surpassing its previous record set before the global economic downturn.

摘要：据悉，2013年里奥哈葡萄酒的销量达到了2.77亿升，超过了全球经济低迷期前创下了的历史记录。

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Arabs such as the al-Thanis of Qatar pay record prices for the abstract expressionism of Mark Rothko.

ECONOMIST: Art.view