I want to know what is difference between this 2 ELEMENT tag :
<!ELEMENT bank (account*, customer*, depositor*)>
以及
<!ELEMENT bank (account | customer | depositor )*>
感谢。
简言之,第一项《教育权利宣言》指出,儿童内容必须按具体顺序排列。 第二项《教育宣言》说,儿童的内容可以按任何顺序排列。
下述意思:<条码>银行包含0或以上<条码>的内容,随后是零或以上<条码>的内容,随后是零或更多<条码>。 (按此具体顺序排列)
<!ELEMENT bank (account*, customer*, depositor*)>
下述意思:<条码>银行包含0或以上<条码>的内容>,或<条码>或<条码>>。
<!ELEMENT bank (account | customer | depositor )*>
The , means "followed by" and the | means "or". The * means zero or more. Also, a + means one or more (at least one).
它指的是定期表达。 虽然我不满意,但我认为第二批接受账户或客户或存款人的分部分。
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