Answer:
Satellites have changed the way we experience the world, by beaming back images from around the globe and letting us explore the planet through online maps and other visuals. Such tools are so familiar today we often take them for granted. ... Satellites often offer hints about life on the ground, but not omniscience.
The SQL is used to change a table's structure by:
The use of the SQL ALTER TABLE command.
<h3>How is it done?</h3>
The SQL ALTER TABLE command is known to be that which is often used to alter the structure of an existing table.
It is known to help one to be able to add or delete columns, make or destroy indexes, alter the kinds of existing columns, rename columns or the table itself.
Note that It can also be used to alter the comment for any kind of table and type of the table therein.
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Answer:
I. The class methods and instance methods of one class may call the public class methods of another class using dot notation and referencing the name of the other class.
Explanation:
Private methods are being accessed from only within the class or scope specified. No other means of accessibility is possible, and even through inheritance. And instance methods can never call without using dot notation, any of the class method of the same class. Hence second and third options are not correct. And the class method and the instance methods of one class may call the public class methods of another class using the dot notation and referencing the name of the other class. Hence, the correct option is the first one.
<span>The answer is Event. A user logging on, an application server connecting to a database server, an authentication server rejecting a password, or an antivirus scanner reporting a suspected virus are all examples of Event.
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