英语词汇“periodic group”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	periodic group
释义	periodic group periodic group (database)(PE) Groups of logically related fields which occurmultiple times within a group. Periodic groups are a non-relational technique. An exampleof a PE would be for storing the history of a person's namechanges, where name was kept in logically related fields suchas surname, first name and middle name - with the personhaving changed their name more than once.
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