1z1-071퍼펙트인증공부자료 - 1z1-071시험대비인증공부자료

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Itcertkr에서 출시한 Oracle 인증 1z1-071시험덤프는Itcertkr의 엘리트한 IT전문가들이 IT인증실제시험문제를 연구하여 제작한 최신버전 덤프입니다. 덤프는 실제시험의 모든 범위를 커버하고 있어 시험통과율이 거의 100%에 달합니다. 제일 빠른 시간내에 덤프에 있는 문제만 잘 이해하고 기억하신다면 시험패스는 문제없습니다.

Oracle 1z1-071 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Using Set Operators	5%	- Use a set operator to combine multiple queries into a single query - Describe set operators - Describe the order of precedence when the set operators are used
Topic 2: Manipulating Data	14%	- Update rows in a table - Control transactions - Delete rows from a table - Insert rows into a table - Describe each data manipulation language (DML) statement
Topic 3: Controlling User Access	5%	- Grant privileges on tables and on a view - Distinguish between granting privileges and roles - Differentiate system privileges from object privileges
Topic 4: Displaying Data from Multiple Tables Using Joins	15%	- View data that does not meet a join condition by using outer joins - Write SELECT statements to access data from more than one table using equijoins and non-equijoins - Join a table to itself by using a self-join - Cross join tables
Topic 5: Retrieving Data Using the SQL SELECT Statement	5%	- Execute a basic SELECT statement - List the capabilities of SQL SELECT statements - Differentiate between SQL statements and SQL*Plus commands
Topic 6: Using Conversion Functions and Conditional Expressions	10%	- Apply the NVL, NULLIF, and COALESCE functions to data - Describe implicit and explicit data type conversion - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Use conditional IF THEN ELSE logic in a SELECT statement
Topic 7: Using Subqueries to Solve Queries	15%	- Define subqueries - Write single-row and multi-row subqueries - Describe the types of problems that subqueries can solve - List the types of subqueries
Topic 8: Working with Oracle Database SQL	8%	- Describe the Oracle Database architecture - Explain the installation of Oracle Database software - Create a container database - Start up and shut down a database
Topic 9: Using DDL Statements to Create and Manage Tables	14%	- Categorize the main database objects - Review the table structure - Describe the data types that are available for columns - Alter table definitions - Create a simple table - Drop, rename, and truncate tables
Topic 10: Reporting Aggregated Data Using Group Functions	15%	- Include or exclude grouped rows by using the HAVING clause - Identify the available group functions - Describe the use of group functions - Group data by using the GROUP BY clause
Topic 11: Using Single-Row Functions to Customize Output	10%	- Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Perform arithmetic with date data - Manipulate dates with the date functions - Describe the differences between single-row and multiple-row functions
Topic 12: Restricting and Sorting Data	6%	- Limit the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands
Topic 13: Creating Other Schema Objects	10%	- Create, modify, and retrieve data from a view - Create, maintain, and use sequences - Create synonyms for database objects - Create and maintain indexes

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1z1-071시험대비 인증공부자료, 1z1-071시험패스 인증공부자료

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최신 Oracle PL/SQL Developer Certified Associate 1z1-071 무료샘플문제 (Q388-Q393):

질문 # 388
Examine this partial query:
SELECT ch.channel_type, t.month, co.country_code, SUM(s.amount_sold) SALES FROM sales s, times t, channels ch, countries co WHERE s.time_ id = t.time id AND s.country_ id = co. country id AND s. channel id = ch.channel id AND ch.channel type IN ('Direct Sales', 'Internet') AND t.month IN ('2000-09', '2000-10') AND co.country code IN ('GB', 'US') Examine this output:

Which GROUP BY clause must be added so the query returns the results shown?

A. GROUP BY ch.channel_type,ROLLUP (t month, co. country_ code) ;
B. GROUP BY CUBE (ch. channel_ type, t .month, co. country code);
C. GROUP BY ch.channel_type, t.month, co.country code;
D. GROUP BYch. channel_ type, t.month,ROLIUP (co. country_ code) ;

정답：C

설명：
A: True. The GROUP BY clause needs to include all non-aggregated columns from the SELECT list to provide the correct grouping for the output. The output shown in the image indicates that the data is grouped by channel_type, month, and country_code.
B: C, and D are incorrect because:
* B includes a ROLLUP which would introduce subtotals that are not reflected in the output shown.
* C specifies a CUBE, which would produce all possible combinations of groupings including the grand total, which is not shown in the output.
* D specifies a ROLLUP on country_code only, which would not correctly group by channel_type and month.

질문 # 389
You execute this query:

What is the result?

A. It returns the date for the first Monday of the next month.
B. It executes successfully but does not return any result.
C. It generates an error.
D. It returns the date for the last Monday of the current month.

정답：A

질문 # 390
Which two statements are true about an Oracle database? (Choose two.)

A. A column definition can specify multiple data types.
B. A table can have multiple foreign keys.
C. A NUMBER column without data has a zero value.
D. A table can have multiple primary keys.
E. A VARCHAR2 column without data has a NULL value.

정답：B,E

질문 # 391
Which normal form is a table in if it has no multi-valued attributes and no partial dependencies?

A. second normal form
B. first normal form
C. third normal form
D. fourth normal form

정답：A

설명：
Explanation/Reference:
References:
https://blog.udemy.com/database-normal-forms/

질문 # 392
Which three statements are correct regarding indexes? (Choose three.)

A. Indexes should be created on columns that are frequently referenced as part of any expression.
B. A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically attempts to create a unique index.
C. When a table is dropped, corresponding indexes are automatically dropped.
D. For each DML operation performed on a table, the corresponding indexes are automatically updated if required.

정답：B,C,D

설명：
References:
http://viralpatel.net/blogs/understanding-primary-keypk-constraint-in-oracle/

질문 # 393
......

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