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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q14-Q19):

NEW QUESTION # 14
Which two true about a sql statement using SET operations such as UNION?

A. The data type group of each column returned by the second query must match the data type group of the corresponding column returned by the first query
B. The data type of each column returned by the second query must be implicitly convertible to the data type of the corresponding column returned by the first query
C. The number, but not names, of columns must be identical for all SELECT statements in the query
D. The data type of each column retuned by the second query must exactly match the data type of the corresponding column returned by the first query
E. The names and number of columns must be identical for all SELECT statements in the query.

Answer: B,C

NEW QUESTION # 15
Examine the description of the EMPLOYEEStable:

Examine this query:

Which line produces an error?

A. Line 5
B. Line 7
C. Line 8
D. Line 3

Answer: D

NEW QUESTION # 16
Examine this SQL statement:
SELECT cust_id, cust_last_name "Last Name
FROM customers
WHERE countryid=10
UNION
SELECT custid CUSTNO, cust_last_name
FROM customers
WHERE countryid=30
Identify three ORDER BY clauses, any one of which can complete the query successfully.

A. ORDER BY"CUST NO"
B. ORDER BY CUSTNO
C. ORDER BY "Last Name"
D. ORDER BY 2, cust_id
E. ORDERBY2, 1

Answer: C,D,E

Explanation:

NEW QUESTION # 17
For each employee in department 90 you want to display:
1. their last name
2. the number of complete weeks they have been employed
The output must be sorted by the number of weeks, starting with the longest serving employee first.Which statement will accomplish this?

A. SELECT last_name, TRUNC( (SYSDATE - hire_ date) 1 7) AS tenure
FROM employees
WHERE department_ id = 90
ORDER BY tenure ;
B. SELECT last_name, TRUNC ( (SYSDATE - - hire_ date) 1 7) AS tenure
FROM employees
WHERE department_id = 90
ORDER BY tenure DESC;
C. SELECT last_name, ROUND( (SYSDATE - hire_ date) 17) AS tenure
FROM employees
WHERE department_ id = 90
ORDER BY tenure DESC;
D. SELECT last_name, ROUND( (SYSDATE - hire_ date) 1 7) AS tenure
FROM employees
WHERE department_ id = 90
ORDER BY tenure ;

Answer: B

NEW QUESTION # 18
Examine the structure of the PROMOTIONS table: (Choose the best answer.)

Management requires a report of unique promotion costs in each promotion category.
Which query would satisfy this requirement?

A. SELECT DISTINCT promo_cost, promo_category FROM promotions
B. SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1
C. SELECT promo_category, DISTINCT promo_cost FROM promotions
D. SELECT DISTINCT promo_cost, DISTINCT promo_category FROM promotions;

Answer: B

NEW QUESTION # 19
......

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