Oracle 1z0-071 Exam | 1z0-071関連日本語版問題集 -最高のものをあげる1z0-071オンライン試験

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Oracle 1z0-071 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Using Subqueries to Solve Queries	15%	- Define subqueries - Describe the types of problems that subqueries can solve - Write single-row and multi-row subqueries - List the types of subqueries
Topic 2: Working with Oracle Database SQL	8%	- Start up and shut down a database - Create a container database - Describe the Oracle Database architecture - Explain the installation of Oracle Database software
Topic 3: Restricting and Sorting Data	6%	- Use DEFINE and UNDEFINE commands - Sort the rows that are retrieved by a query - Limit the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime
Topic 4: 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 5: 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
Topic 6: Creating Other Schema Objects	10%	- Create and maintain indexes - Create, maintain, and use sequences - Create, modify, and retrieve data from a view - Create synonyms for database objects
Topic 7: Manipulating Data	14%	- Insert rows into a table - Update rows in a table - Control transactions - Delete rows from a table - Describe each data manipulation language (DML) statement
Topic 8: Using Single-Row Functions to Customize Output	10%	- Perform arithmetic with date data - Describe the differences between single-row and multiple-row functions - Manipulate dates with the date functions - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate numbers with the ROUND, TRUNC, and MOD functions
Topic 9: Reporting Aggregated Data Using Group Functions	15%	- Identify the available group functions - Include or exclude grouped rows by using the HAVING clause - Describe the use of group functions - Group data by using the GROUP BY clause
Topic 10: Using Conversion Functions and Conditional Expressions	10%	- Use conditional IF THEN ELSE logic in a SELECT statement - Describe implicit and explicit data type conversion - Apply the NVL, NULLIF, and COALESCE functions to data - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions
Topic 11: Retrieving Data Using the SQL SELECT Statement	5%	- Differentiate between SQL statements and SQL*Plus commands - List the capabilities of SQL SELECT statements - Execute a basic SELECT statement
Topic 12: Using DDL Statements to Create and Manage Tables	14%	- Review the table structure - Drop, rename, and truncate tables - Categorize the main database objects - Alter table definitions - Describe the data types that are available for columns - Create a simple table
Topic 13: Displaying Data from Multiple Tables Using Joins	15%	- Join a table to itself by using a self-join - 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 - Cross join tables

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1z0-071オンライン試験 & 1z0-071シュミレーション問題集

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Oracle Database SQL 認定 1z0-071 試験問題 (Q107-Q112):

質問 # 107
You want to write a query that prompts for two column names and the WHERE condition each time It is executed in a session but only prompts for the table name the first time it is executed. The variables used in your
query are never undefined in your session . Which query can be used?

A. SELECT &&col1,&&col2
FROM &table
WHERE &&condition= &&cond;
B. SELECT &col1, &col2
FROM &&table
WHERE &condition;
C. SELECT'&co11','&&co12'
FROM &table
WHERE'&&condition' ='&cond';
D. SELECT&&col1, &&col2
FROM &table
WHERE &&condition;
E. SELECT &col1, &col2
FROM "&table"
WHERE &condition;

正解：B

質問 # 108
Which two statements are true about transactions in the Oracle Database server?

A. If a session has an uncommitted transaction, then a DDL statement issue a COMMIT before starting a new transaction.
B. An uncommitted transaction commits automatically if the user exits SQL*Plus
C. Data Manipulation Language (DML) statements always start a new transaction.
D. A Data Definition Language (DDL) statement does a commit automatically only for the data dictionary updates caused by the DDL
E. A session can always see uncommitted updates made by itself.
F. A user can always see uncommitted updates made by the same user in a different session.

正解：C、E

解説：
A: Incorrect. An uncommitted transaction is not automatically committed if the user exits SQL*Plus. It is rolled back unless otherwise specified. B. Correct. A DML statement such as INSERT, UPDATE, or DELETE will implicitly start a new transaction if there is no current transaction running in the session. C. Incorrect. A user cannot see uncommitted updates made by another session; a session can only see its own uncommitted changes. D. Incorrect. A Data Definition Language (DDL) statement automatically commits any outstanding transactions in the session, not just the changes to the data dictionary. E. Correct. A session can always see its own uncommitted updates. This is because Oracle uses a multiversion consistency model, allowing each user to see a consistent view of the data including their own changes. F. Incorrect but close. If a session has an uncommitted transaction, then a DDL statement does issue a COMMIT before executing and starting a new implicit transaction, not just for the data dictionary updates but for all pending changes in the session.
This information can be verified in the Oracle Database SQL Language Reference and Oracle Database Concepts documentation, which discuss transaction management and the behavior of DML and DDL statements within transactions.

質問 # 109
Examine this partial statement:
SELECT ename, sal,comm FROM emp
Now examine this output:

WHICH ORDER BY clause will generate the displayed output?

A. ORDER BY NVL(comm,0) ASC NULLS FIRST, ename
B. ORDER BY NVL(enam,0) DESC, ename
C. ORDER BY comm DESC NULLS LAST, ename
D. ORDER BY NVL(comm,0) ASC NULLS LAST, ename

正解：B、C

質問 # 110
View the exhibit and examine the structure of ORDERSand CUSTOMERStables.

Which INSERT statement should be used to add a row into the ORDERStable for the customer whose CUST_LAST_NAMEis Robertsand CREDIT_LIMITis 600? Assume there exists only one row with CUST_LAST_NAME as Roberts and CREDIT_LIMIT as 600.
INSERT INTO (SELECT o.order_id, o.order_date, o.order_mode, c.customer_id,

A. o.order_total
FROM orders o, customers c
WHERE o.customer_id = c.customer_id AND c.cust_last_name='Roberts' AND
c.credit_limit=600)
VALUES (1,'10-mar-2007', 'direct', (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
INSERT INTO orders (order_id, order_date, order_mode,
B. (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total)
VALUES (1,'10-mar-2007', 'direct', &&customer_id, 1000);
C. (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total)
VALUES (1,'10-mar-2007', 'direct', &customer_id, 1000);
INSERT INTO orders
D. VALUES (1,'10-mar-2007', 'direct',
(SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
INSERT INTO orders (order_id, order_date, order_mode,

正解：D

質問 # 111
View the exhibit and examine the ORDERStable.
ORDERS
Null? Type
Name
ORDER ID NOT NULL NUMBER(4)
ORDATE DATE DATE
CUSTOMER ID NUMBER(3)
ORDER TOTAL NUMBER(7,2)
The ORDERStable contains data and all orders have been assigned a customer ID. Which statement would add a NOTNULLconstraint to the CUSTOMER_IDcolumn?

A. ALTER TABLE orders
MODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);
B. ALTER TABLE orders
MODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
C. ALTER TABLE orders
ADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
D. ALTER TABLE orders
ADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;

正解：A

質問 # 112
......

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