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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q33-Q38):

NEW QUESTION # 33
Examine the description of the EMPLOYEES table:

You write this failing statement:
SELECT dept_no AS department_id, MAX (salary) As max_sal
FROM employees
WHERE salary >10000
GROUP BY department_id
ORDER BY max_sal;
Which clause causes the error?

A. WHERE
B. GROUP BY
C. SELECT
D. ORDER BY

Answer: B

Explanation:
In the SQL statement provided, the error is caused by the GROUP BY clause. In Oracle SQL, when using GROUP BY, the expression in the GROUP BY clause must match exactly the expression in the SELECT list. The GROUP BY clause should reference the column name dept_no as mentioned in the SELECT list, not the alias department_id which is defined within the same SELECT statement.
The corrected SQL statement should be:
SELECT dept_no AS department_id, MAX(salary) As max_sal FROM employees WHERE salary > 10000 GROUP BY dept_no -- Changed from 'department_id' to 'dept_no' ORDER BY max_sal; Reference:
Oracle Documentation on GROUP BY clause: GROUP BY Clause

NEW QUESTION # 34
Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY.
Only the EMPLOYEE_ID column is indexed.
Rows exist for employees 100 and 200.
Examine this statement:

Which two statements are true? (Choose two.)

A. Employee 100 will have SALARY set to the same value as the SALARY of employee 200
B. Employees 100 will have JOB_ID set to the same value as the JOB_ID of employee 200
C. Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100
D. Employees 100 and 200 will have the same SALARY as before the update command
E. Employee 200 will have SALARY set to the same value as the SALARY of employee 100
F. Employees 100 and 200 will have the same JOB_ID as before the update command

Answer: A,B

NEW QUESTION # 35
Which three statements are correct regarding indexes? (Choose three.)

A. When a table is dropped, the corresponding indexes are automatically dropped.
B. For each DML operation performed, the corresponding indexes are automatically updated.
C. A non-deferrable PRIMARY KEYor UNIQUE KEYconstraint in a table automatically attempts to create a unique index.
D. Indexes should be created on columns that are frequently referenced as part of any expression.

Answer: A,B,C

Explanation:
Explanation/Reference:
References:
http://viralpatel.net/blogs/understanding-primary-keypk-constraint-in-oracle/

NEW QUESTION # 36
Which two statements are true about Oracle synonyms? (Choose two.)

A. A synonym can have a synonym.
B. All private synonym names must be unique in the database.
C. A synonym has an object number.
D. A synonym can be created on an object in a package.
E. Any user can create a PUBLICsynonym.

Answer: B,D

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_7001.htm

NEW QUESTION # 37
View the exhibit and examine the structure of the STOREStable.
STORES table
Name Null? Type
----------------- ----- -------------
STORE_ID NUMBER
NAME VARCHAR2(100)
ADDRESS VARCHAR2(200)
CITY VARCHAR2(100)
COUNTRY VARCHAR2(100)
START_DATE DATE
END_DATE DATE
PROPERTY_PRICE NUMBER
You want to display the NAME of the store along with the ADDRESS, START_DATE, PROPERTY_PRICE, and the projected property price, which is 115% of property price.
The stores displayed must have START_DATEin the range of 36 months starting from 01-Jan-2000 and above.
Which SQL statement would get the desired output?

A. SELECT name, concat (address||','| |city| |', ', country) AS full_address, start_date, property_price, property_price*115/100
FROM stores
WHERE MONTHS_BETWEEN (start_date, TO_DATE('01-JAN-2000','DD-MON-RRRR'))
<=36;
B. SELECT name, address||','||city||','||country AS full_address,
start_date,
property_price, property_price*115/100
FROM stores
WHERE MONTHS_BETWEEN (start_date, TO_DATE('01-JAN-2000','DD-MON-RRRR'))
<=36;
C. SELECT name, concat (address| | ','| |city| |', ', country) AS full_address, start_date, property_price, property_price*115/100
FROM stores
WHERE MONTHS_BETWEEN (start_date, '01-JAN-2000') <=36;
D. SELECT name, concat (address| | ','| |city| |', ', country) AS full_address, start_date, property_price, property_price*115/100
FROM stores
WHERE TO_NUMBER(start_date-TO_DATE('01-JAN-2000','DD-MON-RRRR')) <=36;

Answer: A

NEW QUESTION # 38
......

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