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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q274-Q279):

NEW QUESTION # 274
View the Exhibit and examine the structure of ORDERS and ORDER_ITEMS tables.
ORDER__ID is the primary key in the ORDERS table. It is also the foreign key in the
ORDER_ITEMS table wherein it is created with the ON DELETE CASCADE option.

Which DELETE statement would execute successfully?

A. DELETE orders o, order_items i WHERE o.order id = i.order id;
B. DELETE order_id FROM orders WHERE order_total < 1000;
C. DELETE orders WHERE order_total < 1000;
D. DELETE FROM orders WHERE (SELECT order_id FROM order_items);

Answer: C

NEW QUESTION # 275
View the Exhibit and examine the structure of the PRODUCTS table.

You must display the category with the maximum number of items.
You issue this query:

What is the result?

A. It executes successfully but does not give the correct output.
B. It generates an error because = is not valid and should be replaced by the IN operator.
C. It generate an error because the subquery does not have a GROUP BY clause.
D. It executes successfully and gives the correct output.

Answer: C

NEW QUESTION # 276
Which three are true about privileges and roles?

A. A user has all object privileges for every object in their schema by default.
B. All roles are owned by the SYS schema.
C. A role can contain a combination of several privileges and roles.
D. A role is owned by the user who created it.
E. System privileges always set privileges for an entire database.
F. PUBLIC can be revoked from a user.
G. PUBLIC acts as a default role granted to every user in a database.

Answer: A,C,G

NEW QUESTION # 277
which three statements are true regarding single row subqueries?

A. they must return a row to prevent errors in the SQL statement.
B. THEY CAN BE USED IN THE HAVING CLAUSE
C. THEY MUST BE PLACED ON THE RIGHT SIDE OF THE COMPARISON OPERATOR OR
CONDITION.
D. they must be placed on the left side of the comparison operator or condition.
E. THEY CAN BE USED in the where clause.
F. A SQL STATEMENT MAY HAVE MULTIPLE SINGLE ROW SUBQUERY BLOCKS.

Answer: B,E,F

NEW QUESTION # 278
View the exhibit and examine the description of the DEPARTMENTSand EMPLOYEEStables.

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

Answer: C

NEW QUESTION # 279
......

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