1z1-071 100％시험패스자료덤프샘플문제다운

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Oracle 1z1-071 시험을 보시는 분이 점점 많아지고 있는데 하루빨리 다른 분들보다 Oracle 1z1-071시험을 패스하여 자격증을 취득하는 편이 좋지 않을가요? 자격증이 보편화되면 자격증의 가치도 그만큼 떨어지니깐요. Oracle 1z1-071덤프는 이미 많은분들의 시험패스로 검증된 믿을만한 최고의 시험자료입니다.

Oracle 1z1-071 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Using Data Dictionary Views		- Retrieve metadata and object information
Topic 2: Using SET Operators		- Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators
Topic 3: Restricting and Sorting Data	15%	- WHERE clause and filtering conditions - Substitution variables, DEFINE and VERIFY commands - Operator precedence - ORDER BY clause and sorting rules
Topic 4: Relational Database Concepts	10%	- ERD and SQL statement mapping - Relationship between database and SQL - Theoretical and physical aspects of relational databases
Topic 5: Retrieving Data Using SQL SELECT Statement	20%	- SELECT statement syntax and usage - Arithmetic operations and NULL handling - Column aliases, concatenation, literals and DISTINCT
Topic 6: Conversion Functions and Conditional Expressions	10%	- NVL, NULLIF, COALESCE and CASE expressions - Implicit and explicit data type conversion - TO_CHAR, TO_NUMBER, TO_DATE functions
Topic 7: Managing Views		- Create, modify and drop views - Updatable and read-only views
Topic 8: Displaying Data from Multiple Tables	15%	- Equijoins and non-equijoins - Cartesian products - Self-joins and outer joins
Topic 9: Using Subqueries to Solve Queries		- Single-row and multi-row subqueries - Correlated subqueries for update/delete
Topic 10: Aggregating Data Using Group Functions	10%	- GROUP BY and HAVING clauses - Handling NULLs in group functions - SUM, AVG, COUNT, MAX, MIN functions
Topic 11: Using Single-Row Functions to Customize Output	20%	- Nested functions usage - Character, number, and date functions
Topic 12: Controlling User Access		- Roles, granting and revoking privileges - System and object privileges
Topic 13: Managing Tables and Constraints		- Temporary and external tables - Data types, creating/altering/dropping tables - Constraints: primary key, foreign key, unique, check, not null
Topic 14: Manipulating Data and Managing Transactions		- Transaction control: COMMIT, ROLLBACK, SAVEPOINT - Multi-table inserts - INSERT, UPDATE, DELETE, MERGE statements
Topic 15: Managing Indexes, Synonyms and Sequences		- Create and maintain indexes - Create and use sequences - Create and use synonyms
Topic 16: Working with Time Zones and Date/Time Data		- TIMESTAMP, INTERVAL data types - Time zone conversion functions

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1z1-071최신 기출문제, 1z1-071적중율 높은 시험덤프자료

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최신 Oracle PL/SQL Developer Certified Associate 1z1-071 무료샘플문제 (Q351-Q356):

질문 # 351
View the Exhibit and examine the structure of the EMP table which is not partitioned and not an index- organized table. (Choose two.)

Evaluate this SQL statement:
ALTER TABLE emp
DROP COLUMN first_name;
Which two statements are true?

A. The FIRST_NAME column would be dropped provided it does not contain any data.
B. The FIRST_NAME column would be dropped provided at least one column remains in the table.
C. The drop of the FIRST_NAME column can be rolled back provided the SET UNUSED option is added to the SQL statement.
D. The FIRST_NAME column can be dropped even if it is part of a composite PRIMARY KEY provided the CASCADE option is added to the SQL statement.

정답：B

질문 # 352
View the Exhibit and examine the description of the DEPARTMENTS and EMPLOYEES tables.

To retrieve data for all the employees for their EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, the following SQL statement was written:
SELECT employee_id, first_name, department_name
FROM employees NATURAL JOIN departments;
The desired output is not obtained after executing the above SQL statement. What could be the reason for this?

A. The NATURAL JOIN clause is missing the USING clause.
B. The EMPLOYEES and DEPARTMENTS tables have more than one column with the same column name and data type.
C. The DEPARTMENTS table is not used before the EMPLOYEES table in the FROM clause.
D. The table prefix is missing for the column names in the SELECT clause.

정답：B

질문 # 353
Examine the description of the PROMOTIONStable:

You want to display the unique promotion costs in each promotion category.
Which two queries can be used? (Choose two.)
SELECT DISTINCT promo_category || ' has ' || promo_cost AS COSTS FROM

A. ORDER BY 1;
SELECT promo_cost, promo_category FROM promotions ORDER BY 1;
B.
C. SELECT promo_category, DISTINCT promo_cost FROM promotions ORDER BY 2;
D. SELECT DISTINCT promo_cost ||' in '|| DISTINCT promo_category FROM promotions
E. promotions ORDER BY 1;
SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1;

정답：C,D

질문 # 354
Which two statements are true about Data Manipulation Language (DML) statements?

A. An UPDATE...SET... statement can modify multiple rows based on multiple conditions on a table.
B. A DELETE FROM..... statement can remove multiple rows based on multiple conditions on a table.
C. AH INSERT INTO. . .VALUES. . statement can add multiple rows per execution to a table.
D. A DELETE FROM ..... statement can remove rows based on only a single condition on a table.
E. An UPDATE...SET.... statement can modify multiple rows based on only a single condition on a table.
F. An INSERT INTO...VALUES..... statement can add a single row based on multiple conditions on a table.

정답：A,B

설명：
http://www.techonthenet.com/sql/and_or.php

질문 # 355
You execute this command:

Which two are true? (Choose two.)

A. It drops any triggers defined on the table.
B. A ROLLBACKstatement can be used to retrieve the deleted data.
C. It retains the indexes defined on the table.
D. A FLASHBACK TABLEstatement can be used to retrieve the deleted data.
E. It retains the integrity constraints defined on the table.
F. It always retains the space used by the removed rows.

정답：C,E

설명：
Explanation/Reference: https://docs.oracle.com/html/E25494_01/general003.htm

질문 # 356
......

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