Answer:
Directive
Explanation:
A directive access control is used to direct, confine, or control the actions of subject to force compliance with security policies. Some examples of direct access controls are: security guards, guard dogs, posted notifications, monitoring, supervising, work task procedures, and awareness training. It can also be categorized by how it is implemented; for example, it can be administrative, logical/technical, or physical.
Answer:
The correct option is option 4 from the options indicated below:
Explanation:
The options are as given below
1-SELECT customer# FROM customers
UNION
SELECT customer# FROM orders;
2-SELECT customer# FROM orders
MINUS
SELECT customer# FROM customers;
3-SELECT customer# FROM orders
INTERSECT
SELECT customer# FROM customers;
4-SELECT customer# FROM customers
MINUS
SELECT customer# FROM orders;
Option 1 is not correct as it will provide the list of all the customers whether they have placed order or not.
Option 2 is not correct as it will provide the list of customers who have placed order but are not in the customers table. This will return the empty records.
Option 3 is not correct as it will provide the list of customers who have placed the order.
Option 4 is correct as it will provide the list of customers from the CUSTOMERS table which are not in the Orders table. thus the list of customers who have not placed the order yet.
Answer: option d is correct
Explanation:
It improves quality and efficiency of computer systems. They can have part to whole relations, extrapolations, or predictions.
Answer:
The answer is "Option A"
Explanation:
In the OOPs programming language, the class and object concept is used, in which class is a collection of data members, and member function and object is known as real-time entity. In the class when the main method is created, so inside this method class object is created that's why the answer to this question is true.
