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"Charles Babbage'" is known as father of computer.

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Generally the private and protected member of a class can not be accessed by the function of that same class but if you want to access it then you need to make the function as the friend function of that same class.  

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For Selection sort = Passes n-1 for n items

For Bubble sort = Passes n-1 for n items

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Ther are three types of Access Specifier in C++

Public , Private , Protected

1. Public: means all the class members declared under public will be available to everyone.

2. Private: means that no one can access the class members declared private outside that class. By default class variables and member functions are private.

3. Protected: It is the last access specifier, and it is similar to private, it makes class member inaccessible outside the class. But they can be accessed by any subclass of that class.

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DBMS is defined as the software program that is used to manage all the databases that are stored on the network or system hard disk.

The database system in which the relationships among different tables are maintained is called Relational Database Management System.

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Secondary Memory is a Non-Volatile memory which means once the data is saved and power goes off the data remain the same, The data will not be lost.

Different Types of secondary memory are cd,dvd, Hard Disk, Flash memory etc

It is also called as external memory.

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A microcomputer is a computer with a smaller scale generally used as Personal Computer (PC).

It is relatively not so much expensive.

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Basically, The system which uses binary number to understand and do their functionality is known as binary number systen. Like our computer which understand only binary Language that is 1 for "On" and 0 for "Off".

A binary number system having always base 2.

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A wide area network (WAN) is a telecommunications network or computer network that extends over a large geographical distance.

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A local area network (LAN) is a group of computers and associated devices that share a common communications line or wireless link to a server. Typically, a LAN encompasses computers and peripherals connected to a server within a small geographic area such as an office building or home.