COMPUTER - INPUT DEVICES
Following are few of the important input devices which are used in a computer:
COMPUTER - READ ONLY MEMORY
ROM stands for Read Only Memory. The memory from which we can only read but cannot write on
it. This type of memory is non-volatil
TYPES OF COMPUTER
What is Network?
A network consists of two or more computers
that are linked in order to share resources (such
as printers and CDs), exchange files, or allow
All data must be protected from all types
Accidental threats caused by accidents
such as operator carelessness, power failure,
disk crashes and fire.
Intentional caused by human, to exploit
weaknesses in t
Normalization in Databases
What is Normalization?
Unnormalized data exists in flat files
Normalization is the process of
moving data into related tables
This is usually done by running action
queries (Make Table and Append
queries).unless youre startin
CS 2441: In-Class Exercises. Relational Algebra Queries. Solutions
For the above schema (the primary key for each re
COMPUTER - RANDOM ACCESS MEMORY
RAMRandomAccessMemory is the internal memory of the CPU for storing data, program and program
result. It is read/write memory
COMPUTER - DATA AND INFORMATION
What is data?
Data can be defined as a representation of facts, concepts or instructions in a formalized manner