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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q264-Q269):

NEW QUESTION # 264
Which two statements are true about the ORDER BY clause when used with a SQL statement containing a SET operator such as UNION? (Choose two.)

A. The first column in the first SELECT of the compound query with the UNION operator is used by default to sort output in the absence of an ORDER BY clause.
B. Column positions must be used in the ORDER BY clause.
C. Each SELECT statement in the compound query can have its own ORDER BY clause.
D. Each SELECT statement in the compound query must have its own ORDER BY clause.
E. Only column names from the first SELECT statement in the compound query are recognized.

Answer: C,E

NEW QUESTION # 265
Which normal form is a table in if it has no multi-valued attributes and no partial dependencies?

A. Fourth normal form
B. Second normal form
C. Third normal form
D. First normal form

Answer: B

NEW QUESTION # 266
View the Exhibit and examine the structure of ORDERS and ORDER_ITEMS tables.
ORDER_ID is the primary key in the ORDERS table and the foreign key of the ORDER_ITEMS table, whose constraint is defined with the ON DELETE CASCADE option.
Which DELETE statement would execute successfully?

A. DELETE order_idFROM ordersWHERE order_total < 1000;
B. DELETEFROM ordersWHERE (SELECT order_idFROM order_items);
C. DELETE ordersWHERE order_total < 1000;
D. DELETE orders o, order_items iWHERE o.order_id = i.order_id;

Answer: C

NEW QUESTION # 267
See the Exhibit and examine the structure of the PROMOTIONS table:

Using the PROMOTIONS table,
you need to find out the average cost for all promos in the range $0-2000 and $2000-5000 in
category A.
You issue the following SQL statements:

What would be the outcome?

A. It generates an error because NULL cannot be specified as a return value.
CASE Expression
Facilitates conditional inquiries by doing the work of an IF-THEN-ELSE statement:
CASE expr WHEN comparison_expr1 THEN return_expr1
[WHEN comparison_expr2 THEN return_expr2
WHEN comparison_exprn THEN return_exprn
ELSE else_expr]
END
B. It generates an error because CASE cannot be used with group functions.
C. It generates an error because multiple conditions cannot be specified for the WHEN clause.
D. It executes successfully and gives the required result.

Answer: D

NEW QUESTION # 268
The SALES table has columns PROD_IDand QUANTITY_SOLDof data type NUMBER.
Which two queries execute successfully?

A. SELECT COUNT(prod_id) FROM sales GROUP BY prod_id WHERE quantity_sold > 55000;
B. SELECT prod_id FROM sales WHERE quantity_sold > 55000 GROUP BY prod_id HAVING
COUNT(*) >10;
C. SELECT prod_id FROM sales WHERE quantity_sold > 55000 AND COUNT(*) > 10 GROUP
BY COUNT(*) >10;
D. SELECT prod_id FROM sales WHERE quantity_sold > 55000 AND COUNT(*) > 10 GROUP
BY prod_id HAVING COUNT(*) >10;
E. SELECT COUNT (prod_id) FROM sales WHERE quantity_sold > 55000 GROUP BY
prod_id;

Answer: B,E

NEW QUESTION # 269
......

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