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Oracle 1Z0-082考試包括75個多選題，需在120分鐘內完成。此考試涵蓋廣泛的主題，包括數據庫架構、數據管理、備份和恢復、安全、性能調整和監控等。考生必須得到至少63％的分數才能通過考試並獲得OCA認證。

Oracle 1Z0-082（Oracle數據庫管理I）認證考試旨在測試負責管理和維護Oracle數據庫的數據庫管理員的知識和技能。該考試是成為Oracle認證專業人士的第一步，這是IT行業中非常受歡迎的資格證書。該認證表明個人對數據庫概念有扎實的理解，並可以執行各種管理任務，例如安裝、配置和維護Oracle數據庫。

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最新的 Oracle Database 19c 1Z0-082 免費考試真題 (Q57-Q62):

問題 #57
Which three statements are true about Oracle synonyms? (Choose three.)

A. A SEQUENCE can have a synonym
B. A synonym created by one user can refer to an object belonging to another user
C. A synonym cannot be created for a PL/SQL package
D. Any user can drop a PUBLIC synonym
E. A synonym can be available to all users

答案：A,B,E

問題 #58
Examine the description of the CUSTOMERS table:

You want to display details of all customers who reside in cities starting with the letter D followed by at least two characters.
Which query can be used?

A. SELECT * FROM customers WHERE city LIKE 'D_%';
B. SELECT * FROM customers WHERE city LIKE 'D_';
C. SELECT * FROM customers WHERE city = '%D_';
D. SELECT * FROM customers WHERE city = 'D_%';

答案：A

問題 #59
Which two statements are true about single row functions? (Choose two.)

A. CEIL : can be used for positive and negative numbers
B. MOD : returns the quotient of a division operation
C. CONCAT : can be used to combine any number of values
D. TRUNC : can be used with NUMBER and DATE values
E. FLOOR : returns the smallest integer greater than or equal to a specified number

答案：B,D

解題說明：
https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/Single-Row- Functions.html#GUID-B93F789D-B486-49FF-B0CD-0C6181C5D85C

問題 #60
Which two statements are true about the rules of precedence for operators? (Choose two.)

A. The concatenation operator | | is always evaluated before addition and subtraction in an expression
B. Arithmetic operators with equal precedence are evaluated from left to right within an expression
C. Multiple parentheses can be used to override the default precedence of operators in an expression
D. NULLS influence the precedence of operators in an expression
E. The + binary operator has the highest precedence in an expression in a SQL statement

答案：C,E

問題 #61
Which two statements are true about the SET VERIFY ON command? (Choose two.)

A. It displays values for variables used only in the WHERE clause of a query
B. It can be used only in SQL*Plus
C. It displays values for variables prefixed with &&
D. It displays values for variables created by the DEFINE command
E. It can be used in SQL Developer and SQL*Plus

答案：C,E

問題 #62
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