2019年2月1日 星期五

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Microsoft 70-761 考後心得


資料庫開發



分享心得前一樣先附上自己的成績單!

不高不低還是PASS啦!

  背景介紹: 非相關科系,因轉職上的考量,不斷考取證照精進自己的實力。


  準備方法: 1.巨匠資料庫開發實體課程(總共上了三遍)

                     2.參考書籍:微軟官方教材(20761A-Querying Date With Transact-SQL)

                     3.考古題網站複習:進入該網站點選 Briefing Microsoft Knowledge,就可以看到以下連結入境,若是
                                    跳出填入email帳號,只要打xxx@xxx.xxx就可以進入啦!

                   取之網路回饋網路(給需要準備的人參考),這個考古題網站至少有四成命中率,提供我在考場看到的
                                
                   考題資訊7.11.12.2940.44.45.46.54.55.56.57.60.62.64.68.82,反正考題多看無礙,當作學習啦!但是

                   答案不是那麼準確可以看其他網友在網站內分享的資訊幫助學習。

                    3.利用考古題抓複習方向,每一題答案的觀念都要弄懂,因為考試很活背答案是沒有用的。

                    4.切記考古題中撰寫T-SQL指令要多練習,我這次遇到有六題,方向大概是UPDATE/DELETE/
                                     WHERE/GROUP BY/LEFT JOIN/INNER JOIN的相關運用。
                                 
                   5.參考文件(1)https://leoyeh.me/2018/02/25/SQL-Server-%E6%BA%96%E5%82%99%E8%80%83%E8%A9%A6-1/
                                      (2)https://jasper-it.blogspot.com/2017/11/sql-server-70-762_20.html
                                     

考試時間: 120分鐘/46題。

考試提醒:

                 1.提前十五分鐘到考場辦理入場手續,記得帶雙證件。
              
                 2.題型若是遇到單選題,一旦按下YES/NO就無法再回頭。

                 3.下圖是筆者畫的示意圖,因為在進入第一題時,就是YES/NO問題,不小心

                      錯按兩次NEXT,就無法回頭(當下超懊惱的@@)。左上箭頭會跳出整個
                      考題,不用擔心錯按,只要在總畫面選擇未答題的題目就可以返回了。
                  

考試中關鍵指令的範圍:

  • PIVOT, UNPIVOT
  • EXCEPT / INTERSECT / UNION / UNION ALL / LEFT JOIN / JOIN / FULL JOIN / CROSS JOIN 差異
  • CROSS APPLY 與 OUTER APPLY 差異
  • TRY_CAST(), TRY_CONVERT(), TRY_PARSE()用法
  • INDEX VIEW 觀念
  • INDEX WHERE GETDATE()
  • FUNCTION(SCALE,TABLE-VALUE)
  • TRY CATCH
  • TRAIN(COMMIT+ROLLBACK)
  • RAISERROR+THROW
  • XACT_ABORT()/XACT_STATE()
  • MERGER 用來騙人的選項
  • CTE遞迴:(因為觀念比較難,推薦以下網友整理還不錯的網誌https://dotblogs.com.tw/henryli/2014/06/03/145344
  • FOR SYSTEM_TIME(1.AS OF 2.FROM 3.BETWEEN 4. CONTAINED IN 5.ALL 使用上差別和使用時機,非常重要!!!!!)






   

     

 


                  

12 則留言:

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  3. 請問多選題的話,題目會跟你說這是多選題嗎?

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    1. (70-761 V.1 第30題,考古題拖拉提例子)
      You need to create a function that calculates the highest tax rate charged for an item in a specific order.
      Which five Transact-SQL segments should you use to develop the solution? To answer, move the appropriate
      Transact-SQL segments from the list of Transact-SQL segments to the answer area and arrange them in the
      correct order.
      Select and Place:
      像是拖拉題,你可以看到題目就有說要你選五個T-SQL片段(Which five Transact-SQL segments should you use to develop the solution?),去開發解決方案,但是有些題目可能也沒有明確說明,要自己判斷喔!

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