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Oracle 1Z0-071(Oracle數據庫SQL)認證考試是一種表現您在SQL方面的專業知識並獲得技能認可的絕佳方法。它是為對SQL有牢固了解並希望在Oracle數據庫SQL中驗證技能的個人而設計的。如果您有興趣從事SQL開發或數據庫管理職業,則該認證考試可以幫助您實現目標。
Oracle 1Z0-071認證考試是一項具有挑戰性的考試,需要在SQL編程和Oracle數據庫管理方面進行廣泛的知識和技能。該考試涵蓋了一系列主題,包括SQL選擇語句,數據操縱,表創建和管理以及數據庫安全性。通過考試的候選人將證明他們在這些領域的熟練程度,並將被公認為是SQL編程和Oracle數據庫管理方面的專家。
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最新的 Oracle PL/SQL Developer Certified Associate 1z0-071 免費考試真題 (Q32-Q37):
問題 #32
Which two are true about a SQL statement using SET operators such as UNION?
- A. The data type of each column returned by the second query must be implicitly convertible to the data type of the corresponding column returned by the first query.
- B. The data type of each column returned by the second query must exactly match the data type of the corresponding column returned by the first query.
- C. The names and number of columns must be identical for all SELECT statements in the query.
- D. The number, but not names, of columns must be identical for all SELECT statements in the query.
- E. The data type group of each column returned by the second query must match the data type group of the corresponding column returned by the first query.
答案:B,E
問題 #33
View the Exhibit and examine the details of the ORDER_ITEMS table.
Evaluate the following SQL statements:
Statement 1:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items;
Statement 2:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items
GROUP BY order_id;
Which statements are true regarding the output of these SQL statements? (Choose all that apply.)
- A. Statement 1 would return only one row of output.
- B. Statement 2 would return multiple rows of output.
- C. Statement 1 would not return give the same output.
- D. Both the statements would give the same output.
- E. Both statements would ignore NULL values for the UNIT_PRICE and QUANTITY columns.
答案:A,B,E
問題 #34
Evaluate the following SQL commands:
The command to create a table fails. Identify the reason for the SQL statement failure.
- A. You cannot use ORD_NOand ITEM_NOcolumns as a composite primary key because ORD_NOis also the FOREIGN KEY.
- B. You cannot use the BETWEENclause in the condition of a CHECKconstraint.
- C. You cannot use SYSDATEin the condition of a CHECKconstraint.
- D. You cannot use the NEXTVALsequence value as a DEFAULTvalue for a column.
答案:C
問題 #35
In the customers table, the CUST_CITY column contains the value 'Paris' for the CUST_FIRST_NAME 'Abigail'.
Evaluate the following query:
What would be the outcome?
- A. Abigail Pa
- B. Abigail PA
- C. Abigail IS
- D. An error message
答案:A
問題 #36
Examine this SQL statement
DELETE FROM employees e
WHERE EXISTS
(SELECT' dummy'
FROM emp history
WHERE employee_ id= e. employee id);
Which two are true?
- A. The subquery is executed before the DELETE statement is executed.
- B. The subquery is executed for every row in the EMPLOYEES table.
- C. The subquery is not a correlated subquery.
- D. The DELETE statement executes successfully even if the subquery selects multiple rows.
- E. All existing rows in the EMPLOYEES table are deleted,
答案:B,D
問題 #37
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