Download Oracle Database SQL.1z0-071.ExamTopics.2026-07-12.272q.vcex

Vendor: Oracle
Exam Code: 1z0-071
Exam Name: Oracle Database SQL
Date: Jul 12, 2026
File Size: 11 MB
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Demo Questions

Question 1
Examine the description of the SALES table:
The SALES table has 55,000 rows.
Examine this statement:
Which two statements are true? (Choose two.)
  1. SALES1 is created with 55,000 rows.
  2. SALES1 has NOT NULL constraints on any selected columns which had those constraints in the SALES table.
  3. SALES1 is created with no rows.
  4. SALES1 is created with 1 row
  5. SALES1 has PRIMARY KEY and UNIQUE constraints on any selected columns which had those constraints in the SALES table.
Correct answer: A, B
Question 2
Examine the data in the ORDERS table:
Examine the data in the INVOICES table:
Examine this query:
Which three rows will it return? (Choose three.)
  1. 2 
  2. 1 
  3. 3 
  4. 5 
    D. 5 01-MAR-2019 
  5. 3 01-JAN-2019
  6. 4 01-FEB-2019
Correct answer: A, D, E
Question 3
Examine the description of the EMPLOYEES table:
Examine this query:
Which line produces an error?
  1. Line 3
  2. Line 5
  3. Line 7
  4. Line 8
Correct answer: A
Question 4
You execute this command:
ALTER TABLE employees SET UNUSED (department_id);
Which two are true? (Choose two.)
  1. A new column with the name DEPARTMENT_ID can be added to the EMPLOYEES table.
  2. No updates can be made to the data in the DEPARTMENT_ID column.
  3. The DEPARTMENT_ID column can be recovered from the recycle bin.
  4. The storage space occupied by the DEPARTMENT_ID column is released only after a COMMIT is issued.
  5. A query can display data from the DEPARTMENT_ID column.
  6. The DEPARTMENT_ID column is set to null for all rows in the table.
Correct answer: A, B
Question 5
Examine this statement:
Which two are true? (Choose two.)
  1. The statement executes successfully only if the subquery does not return multiple rows.
  2. The subquery is not a correlated subquery.
  3. The subquery is evaluated once for each row selected by the outer query.
  4. The subquery is executed for every row in the EMP_HISTORY table.
  5. The subquery is a correlated subquery.
Correct answer: C, E
Question 6
Which two are true to create an index in your own schema for a table owned by another schema? (Choose two.)
  1. You must have the UNLIMITED TABLESPACE privilege.
  2. You must have either the SELECT privilege on the table or the SELECT ANY TABLE privilege.
  3. You must have the CREATE ANY INDEX privilege.
  4. You have the UNLIMITED TABLESPACE privilege or sufficient quota for the tablespace to contain the index.
  5. You have either the INDEX privilege on the table or the CREATE ANY INDEX privilege.
Correct answer: C, D
Question 7
Examine the description of the EMPLOYEES table:
Which query is valid?
  1. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;
  2. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id, join_date;
  3. SELECT dept_id, MAX(AVG(salary)) FROM employees GROUP BY dept_id;
  4. SELECT dept_id, AVG(MAX(salary)) FROM employees GROUP BY dept_id;
Correct answer: B
Question 8
Which two statements are true about date/time functions in a session where
NLS_DATE_FORMAT is set to DD-MON-YYYY HH24:MI:SS? (Choose two.)
  1. SYSDATE can be queried only from the dual table.
  2. SYSDATE can be used in expressions only if the default date format is DD-MON-RR.
  3. CURRENT_DATE returns the current date and time as per the session time zone.
  4. CURRENT_TIMESTAMP returns the same date as CURRENT_DATE.
  5. CURRENT_TIMESTAMP returns the same date and time as SYSDATE with additional details of fractional seconds.
  6. SYSDATE and CURRENT__DATE return the current date and time set for the operating system of the database server.
Correct answer: C, E
Question 9
Which two are true about the USING clause when joining tables? (Choose two.)
  1. It is used to specify an equijoin of columns that have the same name in both tables.
  2. It can never be used with a full outer join.
  3. It can never be used with a natural join.
  4. All column names in a USING clause must be qualified with a table name or table alias.
  5. It is used to specify an explicit join condition involving operators.
Correct answer: A, C
Question 10
Examine this description of the PRODUCTS table:
Rows exist in this table with data in all the columns. You put the PRODUCTS table in read-only mode.
Which three commands execute successfully on PRODUCTS? (Choose three.)
  1. ALTER TABLE products DROP COLUMN expiry_date;
  2. TRUNCATE TABLE products;
  3. DROP TABLE products;
  4. CREATE INDEX price_idx ON products (price);
  5. ALTER TABLE products DROP UNUSED COLUMNS;
  6. ALTER TABLE products SET UNUSED (expiry_date);
Correct answer: C, D, F
Question 11
Which four statements are true regarding primary and foreign key constraints and the effect they can have on table data? (Choose four.)
  1. Primary key and foreign key constraints can be defined at both the column and table level.
  2. A table can have only one primary key and one foreign key.
  3. The foreign key columns and parent table primary key columns must have the same names.
  4. A table can have only one primary key but multiple foreign keys.
  5. Only the primary key can be defined at the column and table level.
  6. It is possible for child rows that have a foreign key to remain in the child table at the time the parent row is deleted.
  7. It is possible for child rows that have a foreign key to be deleted automatically from the child table at the time the parent row is deleted.
Correct answer: A, D, F, G
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