unrepeatable read 中文意思是什麼

unrepeatable read 解釋
不可重讀
  • unrepeatable : 不可重復的
  • read : vt 1 閱讀，朗讀，誦讀；【議會】宣讀（議案）；照譜唱[奏] （aloud out off）。2 辨讀，辨認（暗號等）...
  1. Second lost updates problem ? a special case of an unrepeatable read

    兩次更新問題無法重復讀取的特例。
  2. Unrepeatable read : thread one reads data ; the data is then overwritten by thread two. thread one tries to re - read the data but it has changed

    線程1讀去了數據；但是此數據接著被線程2修改了。線程1試圖從新讀取數據，但是數據已經被修改了。
  3. Unrepeatable read ? a transaction reads a row twice and reads different state each time. for example, another transaction may have written to the row, and committed, between the two reads

    不可重復讀一個事務對同一行數據重復讀取兩次，但是卻得到了不同的結果。例如，在兩次讀取的中途，有另外一個事務對該行數據進行了修改，並提交。
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