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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q23-Q28):

NEW QUESTION # 23
Examine the description of the PRODUCT_ DETAILS table:

Which two statements are true?

A. PRODUCT_ PRICE can be used in an arithmetic expression even if it has no value stored in it.
B. PRODUCT_ NAME cannot contain duplicate values.
C. PRODUCT_ PRICE contains the value zero by default if no value is assigned to it.
D. EXPIRY_ DATE cannot be used in arithmetic expressions.
E. EXPIRY_ DATE contains the SYSDATE by default if no date is assigned to it.
F. PRODUCT_ ID can be assigned the PRIMARY KEY constraint.

Answer: A,F

NEW QUESTION # 24
An Oracle database server session has an uncommitted transaction in progress which updated 5000 rows
in a table.
In which three situations does the transact ion complete thereby committing the updates?

A. When a DBA issues a successful SHUTDOWN TRANSACTIONAL statement and the user, then issues a COMMIT
B. When a CREATE INDEX statement is executed successfully in same session
C. When a DBA issues a successful SHUTDOWN IMMEDIATE statement and the user then issues a COMMIT
D. When a CREATE TABLE AS SELECT statement is executed unsuccessfully in the same session
E. When the session logs out is successfully
F. When a COMMIT statement is issued by the same user from another session in the same database instance

Answer: A,B,E

NEW QUESTION # 25
Which two statements are true regarding the EXISTS operator used in the correlated subqueries?
(Choose two.)

A. The outer query continues evaluating the result set of the inner query until all the values in the result set are processed.
B. It is used to test whether the values retrieved by the inner query exist in the result of the outer query.
C. The outer query stops evaluating the result set of the inner query when the first value is found.
D. It is used to test whether the values retrieved by the outer query exist in the result set of the inner query.

Answer: C,D

NEW QUESTION # 26
View the exhibit and examine the structure in ORDERS and ORDER_ITEMS tables.

You need to create a view that displays the ORDER_ID, ORDER_DATE, and the total number of items in each order.
Which CREATE VIEW statement would create the view successfully?

A. CREATE OR REPLACE VIEW ord_vuAS SELECT o.order_id, o.order_date,
COUNT(i.line_item_id)FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id,o.order_date;
B. CREATE OR REPLACE VIEW ord_vu (order_id, order_date)AS SELECT o.order_id, o.order_date, COUNT(i.line_item_id)"NO OF ITEMS"FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id, o.order_date;
C. CREATE OR REPLACE VIEW ord_vuAS SELECT o.order_id, o.order_date,
COUNT(i.line_item_id)"NO OF ITEMS"FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id,o.order_date;
D. CREATE OR REPLACE VIEW ord_vuAS SELECT o.order_id, o.order_date,
COUNT(i.line_item_id)||'NO OF ITEMS'FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id,o.order_dateWHITH CHECK OPTION;

Answer: C

NEW QUESTION # 27
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('JUL 10 2018','MON DD YYYY');
B. WHERE order_date IN (TO_DATE ('Oct 21 2018','MON DD YYYY'), TO_CHAR('Nov 21
2018','MON DD YYYY'));
C. WHERE ordet_date> TO_CHAR(ADD_MONTHS(SYSDATE, 6),'MON DD YYYY')
D. WHERE TO_CHAR(order_date,'MON DD YYYY') ='JAN 20 2019';
E. WHERE order_date> TO_DATE(ADD_MONTHS(SYSDATE,6),'MON DD YYYY');

Answer: A

Explanation:
In SQL, the correct usage of conversion functions is crucial when performing operations on dates. Oracle uses the TO_DATE function to convert a string to a date, and the TO_CHAR function to convert dates or numbers to strings.
* Statement C is correct: WHERE order_date > TO_DATE('JUL 10 2018','MON DD YYYY'); is a proper use of the TO_DATE function. It converts the string 'JUL 10 2018' to a date type, with the format 'MON DD YYYY', which is then used to compare with the order_date.
* Statements A, B, D, and E are incorrect or misuse conversion functions:
* A is incorrect because TO_CHAR is used to convert dates or numbers to strings, not the other way around, and therefore should not be compared with order_date.
* B is incorrect because order_date is of type DATE, and you should not compare a DATE with a string without converting it; the TO_CHAR here should be TO_DATE.
* D is incorrect because it mixes TO_DATE and TO_CHAR in the same IN list, which should contain date types only.
* E is incorrect because TO_DATE should take a string as an argument, not a date returned by ADD_MONTHS.

NEW QUESTION # 28
......

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