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Oracle 1z0-071 Exam Syllabus Topics:

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

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최신 Oracle PL/SQL Developer Certified Associate 1z0-071 무료샘플문제 (Q354-Q359):

질문 # 354
Which two are true about rollbacks?

A. A transaction interrupted by a system failure is automatically rolled back.
B. If the ROLLBACK statement is used without TO SAVEPOINT, then all savepoints in the transaction are deleted .
C. Data Control L anguage (DCL) statements, such as GRANT and REVOKE, can be rolled back.
D. Data consistency is not guaranteed after a rollback.
E. The ROLLBACK statement does not release locks resulting from table updates.

정답：A,B

질문 # 355
Whith three statements are true about built in data types?

A. The default length for a CHAR column is always one character
B. A BLOB stores unstructured binary data within the database
C. A VARCHAR2 blank pads column values only if the data stored is non numeric and contains no special characlers
D. A BFILE stores unstructured binary data in operating systerm files
E. A VARCHAR2 column definition does not require the length to be specified
F. A CHAR column definition does not require the length to be specified

정답：A,B,D

질문 # 356
.No user-defined locks are used in your database.
Which three are true about Transaction Control Language (TCL)?

A. ROLLBACK without the TO SAVEPOINT clause undoes alt the transaction's changes, releases its locks, and erases all its savepoints.
B. COMMIT ends the transaction and makes all its changes permanent.
C. ROLLBACK without the TO SAVEPOINT clause undoes all the transaction's changes but does not erase its savepoints.
D. ROLLBACK to SAVEPOTNT undoes the transaction's changes made since the named savepoint and then ends the transaction.
E. COMMIT erases all the transaction's savepoints and releases its locks.
F. ROLLBACK without the TO SAVEPOINT clause undoes all the transaction's changes but does not release its locks.

정답：A,B,E

설명：
For Transaction Control Language (TCL) operations:
* A. COMMIT erases all the transaction's savepoints and releases its locks: When a COMMIT operation is executed, it finalizes all changes made during the transaction, removes any savepoints that have been set during the transaction, and releases any locks held on the database objects by the transaction.
* B. COMMIT ends the transaction and makes all its changes permanent: A COMMIT command completes the transaction, making all data modifications permanent and visible to other sessions.
* E. ROLLBACK without the TO SAVEPOINT clause undoes all the transaction's changes, releases its locks, and erases all its savepoints: The ROLLBACK command, when used without specifying a SAVEPOINT, undoes all changes made during the transaction, releases any locks held, and removes any savepoints that were established during the transaction.
Incorrect options:
* C: ROLLBACK, without any specification, not only undoes all the transaction's changes but also releases all locks held by the transaction.
* D: ROLLBACK to a SAVEPOINT only undoes changes up to the named savepoint and does not end the transaction; the transaction continues until a COMMIT or a full ROLLBACK is issued.
* F: ROLLBACK without a TO SAVEPOINT clause also erases all savepoints created during the transaction.

질문 # 357
Examine the description of the SALES1 table:

SALES2is a table with the same description as SALES1.
Some sales data is duplicated in both tables.
You want to display the rows from the SALES1table which are not present in the SALES2 table.
Which set operator generates the required output?

A. INTERSECT
B. UNION
C. MINUS
D. SUBTRACT
E. UNION ALL

정답：C

질문 # 358
Evaluate the following SELECTstatement and view the exhibit to examine its output:
SELECT constraint_name, constraint_type, search_condition,
r_constraint_name, delete_rule, status,
FROM user_constraints
WHERE table_name = 'ORDERS';

Which two statements are true about the output? (Choose two.)

A. The STATUS column indicates whether the table is currently in use.
B. The R_CONSTRAINT_NAME column gives the alternative name for the constraint.
C. The column DELETE_RULE decides the state of the related rows in the child table when the corresponding row is deleted from the parent table.
D. In the second column, indicates a check constraint.

정답：C,D

질문 # 359
......

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