1Z0-082受験内容、1Z0-082最新受験攻略

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Oracle 1Z0-082 Exam Syllabus Topics:

Section	Objectives
Topic 1: Reporting Aggregated Data Using the Group Functions	- Use the GROUP BY clause to group data - Use the HAVING clause to filter grouped data - Describe group functions (AVG, SUM, MIN, MAX, COUNT)
Topic 2: Managing Schema Objects	- Create indexes and views - Manage sequences and synonyms - Manage constraints (NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY, CHECK) - Create and modify tables
Topic 3: Using Single-Row Functions to Customize Output	- Use CASE and DECODE for conditional expressions - Describe the use of conversion functions (TO_CHAR, TO_NUMBER, TO_DATE) - Use character, number, and date functions in SELECT statements - Describe various types of functions available in SQL
Topic 4: Displaying Data from Multiple Tables Using Joins	- Join a table to itself using self-join - Describe different types of joins and their features - Use Equijoins and Non-equijoins - Use CROSS joins - Use OUTER joins (LEFT, RIGHT, FULL)
Topic 5: Restricting and Sorting Data	- Use the LIKE and IN operators - Sort data using the ORDER BY clause - Use the NULL operators (IS NULL, IS NOT NULL) - Use the WHERE clause to limit retrieved rows - Use comparison operators and logical operators (AND, OR, NOT) - Use the BETWEEN comparator
Topic 6: Understanding Oracle Database Architecture - Oracle Database Instance	- Explain the memory structures (SGA, PGA) - Describe the background processes - Understand Oracle Database instance management
Topic 7: Using Conversion Functions and Conditional Expressions	- Use nested functions - Use the CAST function for data type conversion - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Apply the NVL, NULLIF, and COALESCE functions
Topic 8: Introduction to Oracle Database	- Describe Oracle Database architecture - Describe Oracle processes (PMON, SMON, DBWn, LGWR, CKPT, others) - Explain database storage structures (data blocks, segments, tablespaces, data files) - Explain Oracle Database server architecture - Describe Oracle Database instance and memory structures - Describe Oracle Database Cloud Service (DBCS) architecture and features
Topic 9: 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
Topic 10: 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)
Topic 11: Using the Set Operators	- Use set operators to combine multiple queries into a single query - Describe set operators (UNION, UNION ALL, INTERSECT, MINUS)
Topic 12: Understanding Oracle Database Architecture - Database Storage Structures	- Describe the logical and physical database structures - Create and manage tablespaces - Describe tablespaces and data files - Manage space in tablespaces
Topic 13: Retrieving Data using the SQL SELECT Statement	- Use SQL row functions (character, number, date, conversion, general) - Use the ORDER BY clause - List the capabilities of SQL SELECT statements - Describe how schema objects work - Use scalar and correlated subqueries - Execute a basic SELECT statement
Topic 14: Working with Oracle Cloud Exadata Express Cloud Service	- Identify the prerequisites for Exadata Express Cloud Service - Navigate the Exadata Express Cloud Service console - Provision and manage an Exadata Express Cloud Service instance - Describe the features and benefits of Exadata Express Cloud Service
Topic 15: Using Subqueries to Solve Queries	- Define subqueries - Use scalar subqueries in SQL - 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 subqueries in the WHERE clause and HAVING clause
Topic 16: Managing Users, Roles, and Privileges	- Create and manage database user accounts - Differentiate system privileges and object privileges - Create and manage roles - Grant and revoke privileges

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Oracle Database Administration I 認定 1Z0-082 試験問題 (Q136-Q141):

質問 # 136
Which is true about roles?

A. A role can be granted to other roles.
B. A role can be password-protected only if it has been granted system privileges.
C. All roles belong to the SYSTEM schema.
D. Roles can be created only by SYS or SYSTEM.
E. Roles containing object privileges can be created only by the object owner.

正解：B

質問 # 137
Examine the description of the EMPLOYEES table:

Which query is valid?

A. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id, join_date;
B. SELECT dept_id, MAX(AVG(salary)) FROM employees GROUP BY dept_id;
C. SELECT dept_id, AVG(MAX(salary)) FROM employees GROUP BY dept_id;
D. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;

正解：D

質問 # 138
Examine the description of the BOOKS table:

The table has 100 rows.
Examine this sequence of statements issued in a new session:
INSERT INTO books VALUES ('ADV112', 'Adventures of Tom Sawyer', NULL,
NULL);
SAVEPOINT a;
DELETE FROM books;
ROLLBACK TO SAVEPOINT a;
ROLLBACK;
Which two statements are true? (Choose two.)

A. The first ROLLBACK command restores the 101 rows that were deleted and commits the inserted row
B. The second ROLLBACK command replays the delete
C. The first ROLLBACK command restores the 101 rows that were deleted, leaving the inserted row still to be committed
D. The second ROLLBACK command does nothing
E. The second ROLLBACK command undoes the insert

正解：A、E

質問 # 139
Examine the description of the PRODUCT_STATUS table:

The status column contains the values 'in stock' or 'out of stock' for each row.
Which two queries will execute successfully?

A. SELECT prod_id "CURRENT AVAILABILITY" II q'<'s not available)' FROM product_status WHERE status = 'OUT OF STOCK
B. SELECT prod_id II q'l's not available)' FROM product_status WHERE status = 'OUT OF STOCK';
C. SELECT prod_id q's not available" FROM product_status WHERE status = 'OUT OF STOCK*;
D. SELECT prod_id I I q' (*s not available)' "CURRENT AVAILABILITY" FROM product_status WHERE status = 'OUT OF STOCK
E. SELECT prod_id I I q' ('s not available) ?'CURRENT AVAILABILITY' FROM product_status WHERE status = 'OUT OF STOCK
F. SELECT prod_id Il q"'s not available" FROM product_status where status = 'OUT OF STOCK';

正解：B、D

質問 # 140
You want to use table compression suitable for OLTP that will:
* Compress rows for all DML statements on that table
* Minimize the overheads associated with compression
Which compression option is best suited for this?

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

正解：E

質問 # 141
......

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