例如，如果一个关系数据库或电子表格说雇员94321的雇佣日期是2007-10-14，那么很容易表达为三元组。
For example, if a relational database or spreadsheet says that employee 94321 has a hire-date value of 2007-10-14, it would be easy to express this as a triple.
选择一个日期将生成XPath字面表达式作为函数输入，表示所选的日期和时间。
Choosing a date generates an XPath literal expression as input to the function representing the chosen date and time.
新的功能包括用于模式匹配的正则表达式语法，新的日期函数比如当前日期，还有新的算术函数比如floor, ceiling和round。
New functions include regular expression syntax for pattern matching, new date functions such as current date, and new numeric functions such as floor, ceiling and round.
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