최신버전1z0-071적중율높은시험덤프시험자료

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Oracle 1z0-071 Exam Syllabus Topics:

Section	Weight	Objectives
Reporting Aggregated Data Using Group Functions	15%	- Group data by using the GROUP BY clause - Include or exclude grouped rows by using the HAVING clause - Describe the use of group functions - Identify the available group functions
Working with Oracle Database SQL	8%	- Start up and shut down a database - Describe the Oracle Database architecture - Create a container database - Explain the installation of Oracle Database software
Creating Other Schema Objects	10%	- Create, modify, and retrieve data from a view - Create and maintain indexes - Create synonyms for database objects - Create, maintain, and use sequences
Displaying Data from Multiple Tables Using Joins	15%	- Cross join tables - View data that does not meet a join condition by using outer joins - Join a table to itself by using a self-join - Write SELECT statements to access data from more than one table using equijoins and non-equijoins
Using Set Operators	5%	- Use a set operator to combine multiple queries into a single query - Describe the order of precedence when the set operators are used - Describe set operators
Restricting and Sorting Data	6%	- Limit the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query
Manipulating Data	14%	- Control transactions - Delete rows from a table - Insert rows into a table - Update rows in a table - Describe each data manipulation language (DML) statement
Using DDL Statements to Create and Manage Tables	14%	- Alter table definitions - Review the table structure - Create a simple table - Describe the data types that are available for columns - Categorize the main database objects - Drop, rename, and truncate tables
Using Conversion Functions and Conditional Expressions	10%	- Apply the NVL, NULLIF, and COALESCE functions to data - Describe implicit and explicit data type conversion - Use conditional IF THEN ELSE logic in a SELECT statement - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions
Controlling User Access	5%	- Distinguish between granting privileges and roles - Differentiate system privileges from object privileges - Grant privileges on tables and on a view
Using Subqueries to Solve Queries	15%	- Describe the types of problems that subqueries can solve - Define subqueries - Write single-row and multi-row subqueries - List the types of subqueries
Retrieving Data Using the SQL SELECT Statement	5%	- List the capabilities of SQL SELECT statements - Execute a basic SELECT statement - Differentiate between SQL statements and SQL*Plus commands
Using Single-Row Functions to Customize Output	10%	- Manipulate numbers with the ROUND, TRUNC, and MOD functions - Manipulate dates with the date functions - Manipulate strings with character function in the SELECT and WHERE clauses - Describe the differences between single-row and multiple-row functions - Perform arithmetic with date data

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최신 Oracle PL/SQL Developer Certified Associate 1z0-071 무료샘플문제 (Q381-Q386):

질문 # 381
Which two are true about the data dictionary?

A. Base tables in the data dictionary have the prefix DBA_.
B. The data dictionary is constantly updated to reflect changes to database objects, permissions, and data.
C. All users have permissions to access all information in the data dictionary by default
D. The SYS user owns all base tables and user-accessible views in the data dictionary.
E. All user actions are recorded in the data dictionary.

정답：B,D

설명：
C). True, the data dictionary is constantly updated to reflect changes to the metadata of the database objects, permissions, and structures, among other things.E. True, the SYS user owns all base tables in the data dictionary. These base tables underlie all data dictionary views that are accessible by the users.
A, B, and D are not correct because: A. Base tables do not necessarily have the prefix DBA_; instead, DBA_ is a prefix for administrative views that are accessible to users with DBA privileges. B. The data dictionary records metadata about the actions, not the actions themselves. D. Not all users have access to all information in the data dictionary. Access is controlled by privileges.
References:
* Oracle documentation on data dictionary and dynamic performance views: Oracle Database Reference
* Understanding the Oracle data dictionary: Oracle Database Concepts

질문 # 382
View the exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTSand TIMEStables.

The PROD_IDcolumn is the foreign key in the SALEStable referencing the PRODUCTStable.
The CUST_IDand TIME_IDcolumns are also foreign keys in the SALEStable referencing the CUSTOMERS and TIMEStables, respectively.
Examine this command:
CREATE TABLE new_sales (prod_id, cust_id, order_date DEFAULT SYSDATE)
AS
SELECT prod_id, cust_id, time_id
FROM sales;
Which statement is true?

A. The NEW_SALEStable would not get created because the DEFAULTvalue cannot be specified in the column definition.
B. The NEW_SALEStable would not get created because the column names in the CREATETABLE command and the SELECTclause do not match.
C. The NEW_SALEStable would get created and all the NOTNULLconstraints defined on the selected columns from the SALES table would be created on the corresponding columns in the NEW_SALES table.
D. The NEW_SALEStable would get created and all the FOREIGNKEYconstraints defined on the selected columns from the SALES table would be created on the corresponding columns in the NEW_SALES table.

정답：C

질문 # 383
Evaluate the following SQL statement:
SELECT product_name || 'it's not available for order'
FROM product_information
WHERE product_status = 'obsolete';
You received the following error while executing the above query:
ERROR
ORA-01756: quoted string not properly terminated
What would you do to execute the query successfully?

A. Enclose the character literal string in the SELECT clause within double quotation marks
B. Remove the single quotation marks enclosing the character literal string in the SELECT clause
C. Use the Oracle (q) operator and delimiter to allow the use of a single quotation mark within the literal character string in the SELECT clause
D. Use the escape character to negate the single quotation mark within the literal character string in the SELECT clause

정답：C

설명：
http://docs.oracle.com/cd/B19306_01/server.102/b14200/sql_elements003.htm

질문 # 384
Examine this description of the PRODUCTS table:

Rows exist in this table with data in all the columns. You put the PRODUCTS table in read-only mode. Which three commands execute successfully on PRODUCTS?

A. ALTER TABLE products DROP UNUSED COLUMNS
B. DROP TABLE products
C. ALTER TAELE products DROP COLUMN expiry_date;
D. ALTER TABLE products SET UNUSED(expiry_date);
E. TRUNCATE TABLE products;
F. CREATE INDEX price_idx on products (price);

정답：A,B,F

질문 # 385
Which three statements are true about an ORDER BY clause?

A. An ORDER BY clause can perform a linguistic sort
B. By default an ORDERBY clause sorts rows in ascending order
C. An ORDR BY clause will always precede a HAVI NG clause if both are used in the same top-level
D. An ORDER BY clause can perform a binary sort
E. An ORDER BY clause always sorts NULL values last.

정답：A,B,D

질문 # 386
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