1Z0-082인증공부문제 - 1Z0-082인기공부자료

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Oracle 1Z0-082 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Configuring and Managing Oracle Network	10%	- Managing Network Connections - Configuring Listener and Naming Methods
Topic 2: Backup and Recovery Concepts	10%	- Performing Complete and Incomplete Recovery - Understanding Backup and Recovery Architecture - Using RMAN for Backup and Recovery
Topic 3: Administering User Accounts and Security	15%	- Creating and Managing Users - Implementing Security Policies - Managing Privileges and Roles
Topic 4: Managing Database Instances	20%	- Starting Up and Shutting Down Databases - Managing Alert Log and Trace Files - Using Data Dictionary and Dynamic Performance Views - Using Initialization Parameters
Topic 5: Managing Data and Concurrency	10%	- Using SQL to Manage Data - Managing Locks and Concurrency - Managing Transactions
Topic 6: Understanding Oracle Database Architecture	20%	- Understanding Background Processes - Overview of Oracle Database Architecture - Understanding Memory Structures - Understanding Multitenant Architecture - Explaining Storage Structures
Topic 7: Managing Storage Structures	15%	- Managing Tablespaces and Data Files - Managing Redo Log Files - Managing Control Files - Managing Undo Data

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최신 Oracle Database 19c 1Z0-082 무료샘플문제 (Q86-Q91):

질문 # 86
Which four statements are true regarding primary and foreign key constraints and the effect they can have on table data? (Choose four.)

A. A table can have only one primary key but multiple foreign keys
B. It is possible for child rows that have a foreign key to remain in the child table at the time the parent row is deleted
C. Only the primary key can be defined at the column and table level
D. The foreign key columns and parent table primary key columns must have the same names
E. It is possible for child rows that have a foreign key to be deleted automatically from the child table at the time the parent row is deleted
F. Primary key and foreign key constraints can be defined at both the column and table level
G. A table can have only one primary key and foreign key

정답：A,D,E,F

질문 # 87
Which two are true about complete recovery? (Choose two.)

A. It is possible only when the database is in MOUNT state
B. Uncommitted transactions will be rolled back after it completes.
C. Only RMAN backupsets can be used to restore a database as part of it.
D. Incremental backups can be used to roll forward the database while performing it.
E. The database must have FLASHBACK enabled in order to perform it.

정답：A,E

질문 # 88
Your database instance is started with a PFILE.
Examine these parameters:

You want to increase the size of the buffer cache.
Free memory is available to increase the size of the buffer cache.
You execute the command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M;
What is the outcome?

A. The value is changed only in the PFILE and takes effect at the next instance startup
B. The value is changed for the current instance and in the PFILE
C. It fails because the SCOPE clause is missing
D. Change is applied to the current instance, but does not persist after instance restart

정답：D

질문 # 89
Examine the description of the employees table:

Which query requires explicit data type conversion?

A. SELECT SUBSTR<join_date, 1, 2) - 10 FROM employees;
B. SELECT join_date + '20' FROM employees; SELECT salary * '120.50' FROM employees;
C. SELECT join_date FROM employees WHERE join_date > '10-02-2018';
D. SELECT join_date I I ' ' II salary FROM employees;

정답：C

질문 # 90
Which two are true about shrinking a segment online? (Choose two.)

A. It is not possible to shrink either indexes or Index Organized Tables (IOTs)
B. It always eliminates all migrated rows if any exist in the table
C. To shrink a table it must have a UNIQUE KEY constraint
D. It must be in a tablespace that uses Automatic Segment Space Management (ASSM)
E. To shrink a table it must have a PRIMARY KEY constraint
F. To shrink a table it must have row movement enabled

정답：E,F

설명：
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_3001.htm

질문 # 91
......

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