Oracle 1Z1-082學習資料 & 1Z1-082考古題

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Oracle 1Z1-082（Oracle數據庫管理I）認證考試旨在測試希望展示其管理和維護Oracle數據庫專業知識的數據庫管理員的知識和技能。這項考試是成為數據庫管理中的Oracle認證助理（OCA）的第一步。該認證驗證了候選人在Oracle數據庫的安裝，配置和管理等領域的知識。

>> Oracle 1Z1-082學習資料 <<

1Z1-082考古題 - 1Z1-082考題資訊

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最新的 Oracle Database 19c 1Z1-082 免費考試真題 (Q13-Q18):

問題 #13
Which two statements are true about the rules of precedence for operators? (Choose two.)

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

答案：A,D

解題說明：
https://docs.oracle.com/cd/B19306_01/server.102/b14200/operators001.htm

問題 #14
Which two statements are true about substitution variables?

A. A substitution variable can be used only in a select statement.
B. A substitution variable used to prompt for a column name must be enclosed in double quotation marks.
C. A substitution variable can be used with any clause in a select statement.
D. A substitution variable prefixed with & always prompts only once for a value in a session.
E. A substitution variable prefixed with to prompts only once for a value in a session unless it is set to undefined in the session
F. A substitution variable used to prompt for a column name must be enclosed in single quotation marks.

答案：E

問題 #15
Examine this description of the books table containing 100 rows:

Now examine this sequence of statements Issued In a new session;

Examine this description of the books table containing 100 rows:
Which three statements are true?

A. The second rollback command restores the row that was inserted.
B. The second rollback command rolls back the rollback to savepoint a command.
C. The first rollback command restores the 100 rows that were in the table originally.
D. The first rollback command leaves the table's 100 original rows locked.
E. The first rollback command leaves the inserted row locked.
F. The second rollback command restores the 100 rows that were in the table originally.
G. The first RollBack command restores the row that was inserted.

答案：A,B,G

問題 #16
You need to calculate the number of days from 1st January 2019 until today.
Dates are stored in the default format of DD-MON-RR.
Which two queries give the required output? (Choose two.)

A. SELECT TO_CHAR(SYSDATE, 'DD-MON-YYYY') - '01-JAN-2019' FROM DUAL;
B. SELECT TO_DATE(SYSDATE, 'DD/MONTH/YYYY') - '01/JANUARY/2019' FROM DUAL;
C. SELECT SYSDATE - TO_DATE('01-JANUARY-2019') FROM DUAL;
D. SELECT ROUND(SYSDATE - TO_DATE('01/JANUARY/2019')) FROM DUAL;
E. SELECT ROUND(SYSDATE - '01-JAN-2019') FROM DUAL;

答案：A,E

問題 #17
Which two are true about Oracle recovery and data protection solutions? (Choose two.)

A. Data Recovery Advisor can be used to validate backup strategies.
B. Oracle Data Guard can prevent data loss caused by a site failure.
C. RMAN can be used to FLASHBACK a database.
D. Data Recovery Advisor can be used to restore a single file from an RMAN backupset.
E. RMAN can be used to roll back committed transactions.

答案：B,C

問題 #18
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1Z1-082考古題: https://tw.fast2test.com/1Z1-082-premium-file.html

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