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Oracle Database SQL Sample Questions (Q68-Q73):

NEW QUESTION # 68
View the exhibit and examine the ORDERS table.

The ORDERS table contains data and all orders have been assigned a customer ID. Which statement would add a NOT NULL constraint to the CUSTOMER_ID column?

A. ALTER TABLE ordersMODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
B. ALTER TABLE ordersMODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);
C. ALTER TABLE ordersADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
D. ALTER TABLE ordersADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;

Answer: B

NEW QUESTION # 69
Which two statements are true about the rules of precedence for operators? (Choose two.)

A. Arithmetic operators with equal precedence area evaluated from left to right within an expression
B. The + binary operator has the highest precedence in an expression in a SQL statement
C. The concatenation operator | | is always evaluated before addition and subtraction in an expression
D. Multiple parentheses can be used to override the default precedence of operators in an expression
E. NULLS influence the precedence of operators in an expression

Answer: B,D

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/operators001.htm

NEW QUESTION # 70
Examine the structure and data in the PRICE_LIST table:

You plan to give a discount of 25% on the product price and need to display the discount amount in the same format as the PROD_PRICE.
Which SQL statement would give the required result?

A. SELECT TO_CHAR (TO_NUMBER(prod_price) * .25, '$99,999.00')FROM PRICE_LIST
B. SELECT TO_NUMBER (TO_NUMBER(prod_price, '$99,999.99') * . 25, '$99,999.00')FROM PRICE_LIST
C. SELECT TO_CHAR (prod_price* .25, '$99,999.99')FROM PRICE_LIST
D. SELECT TO_CHAR (TO_NUMBER(prod_price, '$99,999.99') * . 25, '$99,999.00')FROM PRICE_LIST

Answer: D

NEW QUESTION # 71
Examine the command to create the BOOKS table.
SQL> create table books(book id CHAR(6) PRIMARY KEY,
title VARCHAR2(100) NOT NULL,
publisher_id VARCHAR2(4),
author_id VARCHAR2 (50));
The BOOK ID value 101 does not exist in the table.
Examine the SQL statement.
insert into books (book id title, author_id values
('101','LEARNING SQL','Tim Jones')

A. It executes successfully only NULL PUBLISHER_ID column name is added to the columns list in the INSERT statement.
B. It executes successfully only if NULL is explicitly specified in the INSERT statement.
C. It executes successfully and the row is inserted with a null PLBLISHER_ID.
D. It executes successfully onlyif NULL PUBLISHER ID column name is added to the columns list and NULL is explicitly specified In the INSERT statement.

Answer: C

NEW QUESTION # 72
Examine this partial command:

Which two clauses are required for this command to execute successfully?

A. the LOCATION clause
B. the REJECT LIMIT clause
C. the access driver TYPE clause
D. the DEFAULT DIRECTORY clause
E. the ACCESS PARAMETERS clause

Answer: A,D

NEW QUESTION # 73
......

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Steve Green Steve Green

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