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Oracle 1z1-071 Exam Syllabus Topics:

Section	Weight	Objectives
Creating Other Schema Objects	10%	- Create, maintain, and use sequences - Create and maintain indexes - Create synonyms for database objects - Create, modify, and retrieve data from a view
Restricting and Sorting Data	6%	- Sort the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Limit the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime
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 - Use conditional IF THEN ELSE logic in a SELECT statement - Apply the NVL, NULLIF, and COALESCE functions to data
Using Subqueries to Solve Queries	15%	- Define subqueries - Describe the types of problems that subqueries can solve - List the types of subqueries - Write single-row and multi-row subqueries
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
Displaying Data from Multiple Tables Using Joins	15%	- Cross join tables - 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
Using DDL Statements to Create and Manage Tables	14%	- Alter table definitions - Categorize the main database objects - Describe the data types that are available for columns - Review the table structure - Drop, rename, and truncate tables - Create a simple table
Using Single-Row Functions to Customize Output	10%	- Manipulate strings with character function in the SELECT and WHERE clauses - Perform arithmetic with date data - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Describe the differences between single-row and multiple-row functions - Manipulate dates with the date functions
Controlling User Access	5%	- Differentiate system privileges from object privileges - Distinguish between granting privileges and roles - Grant privileges on tables and on a view
Manipulating Data	14%	- Describe each data manipulation language (DML) statement - Update rows in a table - Insert rows into a table - Control transactions - Delete rows from a table
Retrieving Data Using the SQL SELECT Statement	5%	- Execute a basic SELECT statement - Differentiate between SQL statements and SQL*Plus commands - List the capabilities of SQL SELECT statements
Reporting Aggregated Data Using Group Functions	15%	- Identify the available group functions - Describe the use of group functions - Group data by using the GROUP BY clause - Include or exclude grouped rows by using the HAVING clause
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

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Oracle Database SQL Sample Questions (Q244-Q249):

NEW QUESTION # 244
View the Exhibit and examine the data in the PRODUCTS table. (Choose the best answer.)

You must display product names from the PRODUCTS table that belong to the 'Software/other' category with minimum prices as either $2000 or $4000 and with no unit of measure.
You issue this query:
SQL > SELECT prod_name, prod_category, prod_min_price FROM products
Where prod_category LIKE '%Other%' AND (prod_min_price = 2000 OR prod_min_price = 4000) AND prod_unit_of_measure <> ' '; Which statement is true?

A. It executes successfully but returns no result.
B. It generates an error because the condition specified for PROD_UNIT_OF_MEASURE is not valid.
C. It executes successfully and returns the required result.
D. It generates an error because the condition specified for the PROD_CATEGORY column is not valid.

Answer: A

NEW QUESTION # 245
Evaluate the following two queries:

Which statement is true regarding the above two queries?

A. Performance would improve in query 2.
B. There would be no change in performance.
C. Performance would improve in query 2 only if there are null values in the CUST_CREDIT_LIMIT column.
D. Performance would degrade in query 2.

Answer: B

NEW QUESTION # 246
Examine the description of the EMPLOYEES table:

Which query is valid?

A. SELECT dept_id, join date, SUM(salary) FROM employees GROUP BY dept_id,join_date;
B. SELECT dept_id, AVG(NAX(salary)) FROM employees GROUP BY dept_id;
C. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;
D. SELECT dept_id, MAX (AVG(salary)) FROM employees GROUP BY dept_id;

Answer: A

NEW QUESTION # 247
Which two statements are true regarding the GROUP BY clause in a SQL statement? (Choose two.)

A. If the SELECT clause has an aggregate function, then those individual columns without an aggregate function in the SELECT clause should be included in the GROUP BY clause.
B. Using the WHERE clause after the GROUP BY clause excludes the rows after creating groups.
C. You can use column alias in the GROUP BY clause.
D. The GROUP BY clause is mandatory if you are using an aggregate function in the SELECT clause.
E. Using the WHERE clause before the GROUP BY clause excludes the rows before creating groups.

Answer: A,E

NEW QUESTION # 248
A session's NLS_DATE_FORMAT is set to DD Mon YYYY .
Which two queries return the value 1 Jan 2019?

A. SELECT to_date(' 2019-01-01 ', 'YYYY -MM-DD' ) FROM DUAL;
B. SELECT DATE '2019-01-01' FROM DUAL ;
C. SELECT TO_ DATE('2019-01-01') FROM DUAL;
D. SELECT TO_CHAR('2019-01-01') FROM DUAL; 2019-01-01
E. SELECT '2019-01-01' FROM DUAL ; 2019-01-01

Answer: A,B

NEW QUESTION # 249
......

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