LINUX+ AND LPIC-1 GDE.TO LINUX CERTIF.
5th Edition
ISBN: 9781337569798
Author: ECKERT
Publisher: CENGAGE L
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Expert Solution & Answer
Chapter 7, Problem 3RQ
<PROGRAM-DESCRIPTION-ANSWER>
A shortcut can be made for a single command using the alias command.
Hence, the given statement is “True”.
</PROGRAM-DESCRIPTION-ANSWER>
Explanation of Solution
alias command:
- The alias command is used in a variety of command-line interpreters that allows the replacement of a word by another string.
- The aliases are shortcuts for the commands that are stored in special variables...
Expert Solution & Answer
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Below is the code for a procedure that will accept a Customer ID as an input parameter and display the Customer ID, Customer Surname and Customer Address.
Review the code, then answer the questions that follow.
create or replace procedure sp_customer_details (c_id IN CUSTOMER.cust_id%TYPE,customer_details out VARCHAR2)ISBEGINSELECT 'CUSTOMER ID:' || c.cust_id || ', Surname:'|| c.cust_sname || ',ADDRESS:' ||c.cust_addressinto customer_detailsfrom CUSTOMER cwhere c.cust_id = c_id;END;
Q.1 Briefly discuss the advantages of using the %TYPE attribute in the code.
Q.2 Create the code to execute the procedure with exception handling if no customer data is found. Use customer ID C115 in your code.
3.
Which among the following shows a valid use of the Direction enumeration as a parameter to the moveCharacter function? Select al that apply.
enum Direction { case north, south, west, east}func moveCharacter(x: Int, y: Int, facing: Direction) {// code here}
moveCharacter(x: 0, y: 0, facing: .southwest)
moveCharacter(x: 0, y: 0, facing: Direction.north)
moveCharacter(x: 0, y: 0, facing: .south)
moveCharacter(x: 0, y: 0, facing: Direction.northeast)
Which of the following is false?
a. The position of the arguments listed in the Call statement should agree with the position of the parameters listed in the receiving procedure’s parameterList.
b. The data type of each argument in the Call statement should match the data type of its corresponding parameter in the receiving procedure’s parameterList.c. The name of each argument in the Call statement should be identical to the name of its corresponding parameter in the receiving procedure’s parameterList.
d. When you pass information to a procedure by value, the procedure stores the value of each item it receives in a separate memory location.
Chapter 7 Solutions
LINUX+ AND LPIC-1 GDE.TO LINUX CERTIF.
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