Download Oracle Database 12c SQL.prepaway.1Z0-071.2020-11-20.1e.287q.vcex

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Exam Oracle Datbase 12c SQL
Number 1z0-071
File Name Oracle Database 12c SQL.prepaway.1Z0-071.2020-11-20.1e.287q.vcex
Size 27.07 Mb
Posted November 20, 2020
Downloads 9

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Demo Questions

Question 1
Evaluate the following SQL statement:
SQL> select cust_id, cust_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 either one of which can complete the query. 

  • A: ORDER BY "Last name"
  • B: ORDER BY 2, cust_id
  • C: ORDER BY CUST_NO
  • D: ORDER BY 2, 1
  • E: ORDER BY "CUST_NO"



Question 2
Which statement is true regarding external tables?

  • A: The CREATE TABLE AS SELECT statement can be used to upload data into a normal table in the database from an external table.
  • B: The data and metadata for an external table are stored outside the database.
  • C: The default REJECT LIMIT for external tables is UNLIMITED.
  • D: ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table. 



Question 3
Which two statements are true about Data Manipulation Language (DML) statements?

  • A: An INSERT INTO...VALUES.. statement can add multiple rows per execution to a table.
  • B: An UPDATE... SET... statement can modify multiple rows based on multiple conditions on a table.
  • C: A DELETE FROM..... statement can remove rows based on only a single condition on a table.
  • D: An INSERT INTO... VALUES..... statement can add a single row based on multiple conditions on a table.
  • E: A DELETE FROM..... statement can remove multiple rows based on multiple conditions on a table.
  • F: An UPDATE....SET.... statement can modify multiple rows based on only a single condition on a table.



Question 4
Which two statements are true regarding roles? (Choose two.)

  • A: A role can be granted to itself.
  • B: A role can be granted to PUBLIC.
  • C: A user can be granted only one role at any point of time.
  • D: The REVOKE command can be used to remove privileges but not roles from other users.
  • E: Roles are named groups of related privileges that can be granted to users or other roles. 



Question 5
Which two statements are true regarding constraints? (Choose two)

  • A: A constraint is enforced only for an INSERT operation on a table.
  • B: A foreign key cannot contain NULL values.
  • C: A column with the UNIQUE constraint can store NULLS.
  • D: You can have more than one column in a table as part of a primary key.



Question 6
Evaluate the following statement. 

   

Which statement is true regarding the evaluation of rows returned by the subquery in the INSERT statement?

  • A: They are evaluated by all the three WHEN clauses regardless of the results of the evaluation of any other WHEN clause.
  • B: They are evaluated by the first WHEN clause. If the condition is true, then the row would be evaluated by the subsequent WHEN clauses.
  • C: They are evaluated by the first WHEN clause. If the condition is false, then the row would be evaluated by the subsequent WHEN clauses.
  • D: The insert statement would give an error because the ELSE clause is not present for support in case none of WHEN clauses are true.



Question 7
Examine the structure of the MEMBERS table:

   

You want to display details of all members who reside in states starting with the letter A followed by exactly one character. 
Which SQL statement must you execute? 

  • A: SELECT * FROM MEMBERS WHERE state LIKE '%A_';
  • B: SELECT * FROM MEMBERS WHERE state LIKE 'A_';
  • C: SELECT * FROM MEMBERS WHERE state LIKE 'A_%';
  • D: SELECT * FROM MEMBERS WHERE state LIKE 'A%';



Question 8
You want to display 5 percent of the rows from the SALES table for products with the lowest AMOUNT_SOLD and also want to include the rows that have the same AMOUNT_SOLD even if this causes the output to exceed 5 percent of the rows. 
Which query will provide the required result? 

  • A: SELECT prod_id, cust_id, amount_sold
    FROM sales 
      ORDER BY amount_sold 
      FETCH FIRST 5 PERCENT ROWS WITH TIES; 
  • B: SELECT prod_id, cust_id, amount_sold
    FROM sales 
      ORDER BY amount_sold 
      FETCH FIRST 5 PERCENT ROWS ONLY WITH TIES; 
  • C: SELECT prod_id, cust_id, amount_sold
    FROM sales 
      ORDER BY amount_sold 
      FETCH FIRST 5 PERCENT ROWS WITH TIES ONLY; 
  • D: SELECT prod_id, cust_id, amount_sold
    FROM sales 
      ORDER BY amount_sold 
      FETCH FIRST 5 PERCENT ROWS ONLY;



Question 9
Examine the structure of the MEMBERS table:
Name                Null?            Type 
------------------ --------------- ------------------------------ 
MEMBER_ID            NOT NULL        VARCHAR2 (6) 
FIRST_NAME                    VARCHAR2 (50) 
LAST_NAME            NOT NULL        VARCHAR2 (50) 
ADDRESS                        VARCHAR2 (50) 
You execute the SQL statement:
SQL > SELECT member_id, ' ' , first_name, ' ' , last_name "ID FIRSTNAME 
LASTNAME " FROM members; 
What is the outcome? 

  • A: It fails because the alias name specified after the column names is invalid.
  • B: It fails because the space specified in single quotation marks after the first two column names is invalid.
  • C: It executes successfully and displays the column details in a single column with only the alias column heading.
  • D: It executes successfully and displays the column details in three separate columns and replaces only the last column heading with the alias.



Question 10
You issue the following command to drop the PRODUCTS table:
SQL > DROP TABLE products; 
Which three statements are true about the implication of this command? (Choose three.)

  • A: All data along with the table structure is deleted.
  • B: A pending transaction in the session is committed.
  • C: All indexes on the table remain but they are invalidated.
  • D: All views and synonyms on the table remain but they are invalidated.
  • E: All data in the table is deleted but the table structure remains.






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