Computer – Generations
Generation in computer terminology is a change in technology a computer is/was being used. Initially, the generation term was used to distinguish between varying hardware technologies. Nowadays, generation includes both…
Computer – Applications
Business A computer has high speed of calculation, diligence, accuracy, reliability, or versatility which has made it an integrated part in all business organizations. Computer is used in business organizations…
USIG Latex
Introduction TeX is a computer program for typesetting documents, created by D. E. Knuth. Typesetting involves formatting of the input text. TeX is a mathematical typesetting mark-up language. A file…
Firewall
A firewall is a security mechanism to protect a local network from the threats it may face while interacting with other networks (Internet). A firewall can be a hardware component,…
Digital Signature
A signature on a legal, financial or any other document authenticates the document. A photocopy of that document does not count. For computerized documents, the conditions that a signed document…
Hacking
Hacking is the act of intruding into someone else’s computer or network. A hacker is someone who does hacking. Hacking may result in a Denial of Service (DoS) attack. The…
Malicious Software
Malicious users use different methods to break into the systems. The software that is intentionally included into a system with the intention to harm the system is called malicious software.…
Security Threat And Security Attack
A threat is a potential violation of security and causes harm. A threat can be a malicious program, a natural disaster or a thief. Vulnerability is a weakness of system…
Representation or Implementation Data Model
The Conceptual Data Model is transformed into the Representation Data Model. Representation data model uses concepts that are understood by the end-user and are also close to the way the…
High-Level or Conceptual Data Model
The conceptual data model is a description of the data requirements of the user. This model is not concerned with the implementation details. It ensures that all the functional and…
