1z1-071공부문제100％시험패스인증덤프공부

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Oracle 1z1-071 Exam Syllabus Topics:

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

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1z1-071시험기출문제 & 1z1-071적중율 높은 시험대비덤프

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최신 Oracle PL/SQL Developer Certified Associate 1z1-071 무료샘플문제 (Q179-Q184):

질문 # 179
Examine the business rule:
Each student can work on multiple projects and each project can have multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true in this scenario? (Choose two.)

A. The ERD must have a M:M relationship between the STUDENTS and PROJECTS entities that must be resolved into 1:M relationships.
B. An associative table must be created with a composite key of STUDENT_ID and PROJECT_ID, which is the foreign key linked to the STUDENTS and PROJECTS entities.
C. STUDENT_ID must be the primary key in the STUDENTS entity and foreign key in the PROJECTS entity.
D. PROJECT_ID must be the primary key in the PROJECTS entity and foreign key in the STUDENTS entity.
E. The ERD must have a 1:M relationship between the STUDENTS and PROJECTS entities.

정답：A,B

설명：
References:
http://www.oracle.com/technetwork/issue-archive/2011/11-nov/o61sql-512018.html

질문 # 180
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 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.
B. 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.
C. The NEW_SALEStable would not get created because the column names in the CREATETABLE command and the SELECTclause do not match.
D. The NEW_SALEStable would not get created because the DEFAULTvalue cannot be specified in the column definition.

정답：A

질문 # 181
Examine the description of the BRICKS table;

Examine the description of the BRICKS_STAGE table;

Which two queries execute successfully?

A. SELECT brick_id,shape FROM bricks
MINUS
SELECT WEIGHT,COLOR from bricks_stage;
B. SELECT shape,color FROM bricks
MINUS
SELECT WEIGHT,color FROM bricks_stage;
C. SELECT shape,color,weight from bricks
MINUS
SELECT * FROM bricks_stage;
D. SELECT shape,color FROM bricks
MINUS
SELECT color,shape FROM bricks_stage;
E. select * from bricks
MINUS
select * from bricks_stage;

정답：A,D

질문 # 182
The ORDERS table has a column ORDER_DATE of date type DATE The default display format for a date is DD-MON-RR
Which two WHERE conditions demonstrate the correct usage of conversion functions?

A. WHERE order_date> TO_DATE(ADD_MONTHS(SYSDATE,6),'MON DD YYYY');
B. WHERE order_date> TO_DATE('JUL 10 2018','MON DD YYYY');
C. WHERE TO_CHAR(order_date,'MON DD YYYY') ='JAN 20 2019';
D. WHERE order_date IN (TO_DATE ('Oct 21 2018','MON DD YYYY'), TO_CHAR('Nov 21 2018','MON DD YYYY'));
E. WHERE ordet_date> TO_CHAR(ADD_MONTHS(SYSDATE, 6),'MON DD YYYY')

정답：B,C

질문 # 183
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 BYch. channel_ type, t.month,ROLIUP (co. country_ code) ;
B. GROUP BY ch.channel_type, t.month, co.country code;
C. GROUP BY ch.channel_type,ROLLUP (t month, co. country_ code) ;
D. GROUP BY CUBE (ch. channel_ type, t .month, co. country code);

정답：C

질문 # 184
......

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