2026 Valid Latest 1z1-071 Test Objectives | Oracle Database SQL 100% Free Dumps Questions

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To be eligible to take the Oracle 1z0-071 exam, candidates must have a strong understanding of SQL concepts and should have experience working with Oracle databases. Additionally, candidates must have a basic understanding of database design and should be familiar with the concepts of normalization and data modeling.

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What are the language, duration, and format of the ORACLE 1Z0-071 Certification Exam?

The language, duration, and format of the ORACLE 1Z0-071 Certification Exam are defined below:

A number of questions: The total number of questions in exam ORACLE 1Z0-071 is 78. You have to answer all the questions in the given time.
Language of exam: The language in which exam ORACLE 1Z0-071 is being administered in English.
Time Duration: The total duration for answering all the questions asked in the ORACLE 1Z0-071 exam is 120 min.

Oracle Database SQL Sample Questions (Q149-Q154):

NEW QUESTION # 149
Evaluate the following ALTER TABLEstatement:
ALTER TABLE orders
SET UNUSED (order_date);
Which statement is true?

A. ROLLBACKcan be used to get back the ORDER_DATEcolumn in the ORDERStable.
B. The DESCRIBEcommand would still display the ORDER_DATEcolumn.
C. The ORDER_DATEcolumn must be empty for the ALTER TABLEcommand to execute successfully.
D. After executing the ALTER TABLEcommand, you can add a new column called ORDER_DATEto the ORDERStable.

Answer: D

NEW QUESTION # 150
Examine the description of the PRODUCTStable:

Which three queries use valid expressions? (Choose three.)
SELECT product_id, (expiry_date - delivery_date) * 2 FROM products;

A. FROM products;
SELECT product_id, unit_price, unit_price + surcharge FROM products;
B. discount FROM products;
SELECT product_id, unit_price, 5 "Discount", unit_price + surcharge - discount
C. SELECT product_id, expiry_date * 2 FROM products;
D. SELECT product_id, unit_price | | 5 "Discount", unit_price + surcharge -
E. SELECT product_id, (unit_price * 0.15 / (4.75 + 552.25)) FROM products;

Answer: A,C,E

Explanation:
Explanation

NEW QUESTION # 151
View the exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTS and TIMES tables.

The PROD_ID column is the foreign key in the SALES table, which references the PRODUCTS table.
Similarly, the CUST_ID and TIME_ID columns are also foreign keys in the SALES table referencing the CUSTOMERS and TIMES tables, respectively.
Evaluate the following CREATE TABLE command:
CREATE TABLE new_sales (prod_id, cust_id, order_date DEFAULT SYSDATE)
AS
SELECT prod_id, cust_id, time_id
FROM sales;
Which statement is true regarding the above command?

A. The NEW_SALES table would not get created because the DEFAULT value cannot be specified in the column definition.
B. The NEW_SALES table would get created and all the FOREIGN KEY constraints defined on the specified columns would be passed to the new table.
C. The NEW_SALES table would get created and all the NOT NULL constraints defined on the specified columns would be passed to the new table.
D. The NEW_SALES table would not get created because the column names in the CREATE TABLE command and the SELECT clause do not match.

Answer: C

NEW QUESTION # 152
Examine this SQL statement:
SELECT cust_id, cus_last_name "Last Name"
FROM customers
WHERE country_id = 10
UNION
SELECT cust_id CUST_NO, cust_last_name
FROM customers
WHERE country_id = 30
Identify three ORDER BY clauses, any one of which can complete the query successfully.

A. ORDER BY "Last Name"
B. ORDER BY CUST_NO
C. ORDERBY 2, 1
D. ORDER BY "CUST_NO"
E. ORDER BY 2,cust_id

Answer: A,C

Explanation:
In SQL, the ORDER BY clause can refer to columns by their alias defined in the SELECT clause or by their positional number in the SELECT list. It's important to understand that after a UNION, the column names in the ORDER BY clause refer to the first SELECT statement's column names and aliases:
Option A: ORDER BY 2, 1
This is correct because it refers to the second and first columns in the first SELECT clause, which correspond to the aliases "Last Name" and cust_id, respectively.
Option E: ORDER BY "Last Name"
This is correct because "Last Name" is a valid alias defined in the first SELECT clause.
The other options fail for the following reasons:
Option B: "CUST_NO" is not recognized in the ORDER BY clause because it's not an alias used in the first SELECT statement.
Option C: Incorrect because 2, cust_id mixes positional reference with a column name that doesn't apply to both SELECT statements consistently.
Option D: ORDER BY CUST_NO fails because CUST_NO is not an alias in the first SELECT clause.

NEW QUESTION # 153
View the exhibit and examine the descriptions of the DEPTand LOCATIONStables.

You want to update the CITYcolumn of the DEPTtable for all the rows with the corresponding value in the CITYcolumn of the LOCATIONStable for each department.
Which SQL statement would you execute to accomplish the task?
UPDATE dept d

A. SET city = ANY (SELECT city
FROM locations l)
UPDATE dept d
B. SET city = (SELECT city
FROM locations l
WHERE d.location_id = l.location_id);
C. SET city = (SELECT city
FROM locations l)
WHERE d.location_id = l.location_id;
UPDATE dept d
D. SET city = ALL (SELECT city
FROM locations l
WHERE d.location_id = l.location_id);
UPDATE dept d

Answer: B

NEW QUESTION # 154
......

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