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Oracle 1z0-071 Exam Syllabus Topics:

Section	Objectives
Topic 1: SQL Retrieval	- Joins and set operations 1. INNER, OUTER, CROSS joins 2. UNION, INTERSECT, MINUS - SELECT statements and filtering data 1. WHERE clause and conditions 2. ORDER BY and row limiting
Topic 2: Subqueries and Advanced SQL	- Correlated subqueries and nested queries - Single-row and multi-row subqueries
Topic 3: SQL Functions	- Single-row functions 1. Character, numeric, date functions - Conversion and conditional functions 1. TO_CHAR, TO_NUMBER, CASE expressions
Topic 4: Data Manipulation and Schema Objects	- DML operations 1. INSERT, UPDATE, DELETE, MERGE - DDL operations 1. CREATE, ALTER, DROP tables and constraints
Topic 5: Relational Database Concepts	- Data types and database objects overview - Tables, rows, columns, and relational model basics

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Oracle Database SQL Sample Questions (Q68-Q73):

NEW QUESTION # 68
Examine the SQL statement used to create the TRANSACTION table.
SQL > CREATE TABLE transaction
(trn_id char(2) primary key,
Start_date date DEFAULT SYSDATE,
End_date date NOT NULL);
The value 'A1' does not exist for trn_id in this table.
Which SQL statement successfully inserts a row into the table with the default value for START_DATE?

A. INSERT INTO transaction VALUES ('A1', DEFAULT, TO_DATE('SYSDATE+10'))
B. INSERT INTO transaction VALUES ('A1', DEFAULT, TO_DATE(DEFAULT+10))
C. INSERT INTO transaction (trn_id, start_date, end_date) VALUES ('A1', , '10-DEC-2014')
D. INSERT INTO transaction (trn_id, end_date) VALUES ('A1', '10-DEC-2014')

Answer: D

NEW QUESTION # 69
Examine the description of the ORDERStable:

Examine the description of the INVOICEStable:

Examine this query:

Which three rows will it return? (Choose three.)

A. 1 <null>
B. 5 01-MAR-2019
C. 2 <null>
D. 4 01-FEB-2019
E. 5 <null>
F. 3 <null>
G. 3 01-JAN-2019

Answer: B,C,G

NEW QUESTION # 70
View the exhibit and examine the description of the DEPARTMENTS and EMPLOYEES tables.

You wrote this SQL statement to retrieve EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, for all employees:
SELECT employee_id, first_name, department_name
FROM employees
NATURAL JOIN departments;
The desired output is not obtained after executing the above SQL statement. What could be the reason for this?

A. The table prefix is missing for the column names in the SELECT clause.
B. The DEPARTMENTS table is not used before the EMPLOYEES table in the FROM clause.
C. The EMPLOYEES and DEPARTMENTS tables have more than one column with the same column name and data type.
D. The NATURAL JOIN clause is missing the USING clause.

Answer: C

Explanation:
Explanation
Natural join needs only one column to be the same in each table. The EMPLOYEES and DEPARTMENTS tables have two columns that are the same (Department_ID and Manager_ID)

NEW QUESTION # 71
Evaluate the following SQL statement:

Which statement is true regarding the outcome of the above query?

A. It executes successfully but ignores the ORDER BY clause because it is not located at the end of the compound statement.
B. It produces an error because the ORDER BY clause should appear only at the end of a compound query-that is, with the last SELECT statement.
C. It produces an error because positional notation cannot be used in the ORDER BY clause with SET operators.
D. It executes successfully and displays rows in the descending order of PROMO_CATEGORY.

Answer: B

NEW QUESTION # 72
Which two statements are true regarding the SQL GROUP BY clause? (Choose two.)

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

Answer: B,C

NEW QUESTION # 73
......

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