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100年 - 100 高等考試_二級_資訊處理:高等資料庫設計#45001
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題組內容
五、若 Wi(M)表示一個交易 Ti 將名為 M 的資料寫入資料庫中,Ri(M)表示一個交易 T,將名 為 M 的資料庫資料讀入程式變數中,Ci 代表交易 Ti 已提交(Commit)。下面此一排程 R1(X),R2(Y),W1(X),W2(Y),R3(Y),R1(Y),C2,W4(X),W3(Y),C3,W1(Y),W4(Y),C4,C1 是否具有以下性質,並說明原因:
⑷無連鎖中止駁回(Avoid-Cascading-Aborts)(4 分)
其他申論題
⑷σa≠50,000 R(4 分)
#150147
⑴衝突可序列性(Conflict-Serializable)(4 分)
#150148
⑵視界可序列性(View-Serializable)(4 分)
#150149
⑶可復原性(Recoverable)(4 分)
#150150
⑸嚴謹性(Strict)(4 分)
#150152
⑴According to the Norwegian law, to kill a group of civilians systematically is the basic criteria for charge against humanity. The maximum penalty for this offence is 30 years in jail, rather than 21 years under the anti-terrorism law.
#150153
⑵After years of development, Taiwan has transformed to be a distinct pluralized country full of vibrant energy. The democratic politics system, unleashing diversified social forces, has taken root firmly in the life of its citizens and formed an interactive living culture.
#150154
⑶As long ago as a decade or more ago, the women’s movement in Taiwan was already proposing a welfare policy based on combining “public caregiving” and “a democratic deliberative mechanism.”
#150155
⑴為了將地球的能量從負面轉為正面、從破壞性轉為建設性,我們必須重拾人類的 尊嚴、回復我們最初的仁慈本性,我們必須堅守非暴力和和平的原則。
#150156
⑵桃園地檢署檢察官偵辦署立醫院弊案,昨天首波起訴五十五位被告。層級最高的 是前衛生署醫院管理委員會執行長,因貪污罪嫌被求刑二十五年。
#150157