Oracle 1Z0-082専門トレーリング & 1Z0-082無料模擬試験

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Oracle 1Z0-082 Exam Syllabus Topics:

Section	Objectives
Using Subqueries to Solve Queries	- Use subqueries in the WHERE clause and HAVING clause - Define subqueries - Use single-row subqueries with single-row and multiple-row operators - Describe the types of subqueries (single-row, multi-row, multiple-column) - Use multiple-row subqueries with multiple-row operators (IN, ANY, ALL) - Use scalar subqueries in SQL
Using Single-Row Functions to Customize Output	- Describe various types of functions available in SQL - Use character, number, and date functions in SELECT statements - Use CASE and DECODE for conditional expressions - Describe the use of conversion functions (TO_CHAR, TO_NUMBER, TO_DATE)
Managing Schema Objects	- Manage sequences and synonyms - Manage constraints (NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY, CHECK) - Create and modify tables - Create indexes and views
Using the Set Operators	- Use set operators to combine multiple queries into a single query - Describe set operators (UNION, UNION ALL, INTERSECT, MINUS)
Retrieving Data using the SQL SELECT Statement	- Use SQL row functions (character, number, date, conversion, general) - Use scalar and correlated subqueries - Execute a basic SELECT statement - Use the ORDER BY clause - List the capabilities of SQL SELECT statements - Describe how schema objects work
Managing Data in Different Time Zones	- Describe the use of datetime functions (CURRENT_DATE, EXTRACT, LOCALTIMESTAMP) - Use various datetime data types (DATE, TIMESTAMP, INTERVAL) - Explain the concepts of time zones and daylight savings
Working with Oracle Cloud Exadata Express Cloud Service	- Describe the features and benefits of Exadata Express Cloud Service - Provision and manage an Exadata Express Cloud Service instance - Identify the prerequisites for Exadata Express Cloud Service - Navigate the Exadata Express Cloud Service console
Displaying Data from Multiple Tables Using Joins	- Join a table to itself using self-join - Use Equijoins and Non-equijoins - Use CROSS joins - Use OUTER joins (LEFT, RIGHT, FULL) - Describe different types of joins and their features
Understanding Oracle Database Architecture - Oracle Database Instance	- Explain the memory structures (SGA, PGA) - Understand Oracle Database instance management - Describe the background processes
Reporting Aggregated Data Using the Group Functions	- Use the GROUP BY clause to group data - Describe group functions (AVG, SUM, MIN, MAX, COUNT) - Use the HAVING clause to filter grouped data
Understanding Oracle Database Architecture - Database Storage Structures	- Create and manage tablespaces - Describe the logical and physical database structures - Describe tablespaces and data files - Manage space in tablespaces
Managing Users, Roles, and Privileges	- Create and manage database user accounts - Create and manage roles - Differentiate system privileges and object privileges - Grant and revoke privileges
Using Conversion Functions and Conditional Expressions	- Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Use the CAST function for data type conversion - Apply the NVL, NULLIF, and COALESCE functions - Use nested functions
Restricting and Sorting Data	- Use the NULL operators (IS NULL, IS NOT NULL) - Use the BETWEEN comparator - Use the LIKE and IN operators - Use the WHERE clause to limit retrieved rows - Sort data using the ORDER BY clause - Use comparison operators and logical operators (AND, OR, NOT)
Managing Oracle Database Instances	- Use the Automatic Diagnostic Repository (ADR) - Start up and shut down an Oracle Database instance - View the alert log and access dynamic performance views - Manage initialization parameter files (SPFILE, PFILE)
Introduction to Oracle Database	- Describe Oracle processes (PMON, SMON, DBWn, LGWR, CKPT, others) - Describe Oracle Database instance and memory structures - Describe Oracle Database Cloud Service (DBCS) architecture and features - Explain database storage structures (data blocks, segments, tablespaces, data files) - Describe Oracle Database architecture - Explain Oracle Database server architecture

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Oracle Database Administration I 認定 1Z0-082 試験問題 (Q57-Q62):

質問 # 57
Which two statements are true about UNDO and REDO? (Choose two.)

A. DML modifies Oracle database objects and only generates REDO
B. The generation of REDO generates UNDO
C. The generation of UNDO generates REDO
D. DML modifies Oracle database objects and only generates UNDO

正解：B、C

質問 # 58
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 100 rows that were in the table originally.
B. The first rollback command leaves the inserted row locked.
C. The first rollback command restores the 100 rows that were in the table originally.
D. The first RollBack command restores the row that was inserted.
E. The second rollback command restores the row that was inserted.
F. The first rollback command leaves the table's 100 original rows locked.
G. The second rollback command rolls back the rollback to savepoint a command.

正解：D、E、G

質問 # 59
Your database instance was shut down normally and then started in NOMOUNT state. You then execute this command:
ALTER DATABASE MOUNT;
Which two actions are performed? (Choose two.)

A. The initialization parameter file is read
B. The control file is read
C. The Oracle background processes are started
D. The alert log records the execution details
E. The online data files are opened
F. The online redo logs are opened

正解：B、D

解説：
http://facedba.blogspot.com/2014/07/oracle-database-startup-stages-and.html

質問 # 60
You want to use table compression suitable for OLTP that will:
1. Compress rows for all DML statements on that table
2. Minimize the overheads associated with compression
Which compression option is best suited for this?

A. COLUMN STORE COMPRESS FOR ARCHIVE LOW
B. COLUMN STORE COMPRESS FOR QUERY LOW
C. COLUMN STORE COMPRESS FOR ARCHIVE HIGH
D. ROW STORE COMPRESS BASIC
E. ROW STORE COMPRESS ADVANCED

正解：E

解説：
https://www.oracle.com/technetwork/database/options/compression/advanced-compression- wp-
12c-1896128.pdf

質問 # 61
In which three situations does a new transaction always start? (Choose three.)

A. when issuing the first Data Manipulation Language (DML) statement after a COMMIT OR ROLLBACK statement was issued in the same session
B. when issuing a CREATE INDEX statement after a CREATE TABLE statement completed successfully in the same session
C. when issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECT statement was issued in the same session
D. when issuing a CREATE TABLE statement after a SELECT statement was issued in the same session
E. when issuing a TRUNCATE statement after a SELECT statement was issued in the same session
F. when issuing a DML statement after a DML statement failed in the same session

正解：A、C、F

質問 # 62
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