A+ A + is a programming language, a dialect of the APL language but with extensions. Arthur Whitney developed the “A” part of A +, while other developers at Morgan Stanley expanded it, adding graphical interface and other language features. A + has been designed for applications that use number boards intensively, such as financial applications. A + runs on many variants of Unix...
A programming language is a system of conventions adopted to carry out a communication – between the programmer and the computer. The languages used to program a computer are extremely similar to natural languages. They are composed of: 1. words (reserved) 2. punctuation 3. sentences and phrases 4. syntactic rules Just as in order to acquire a foreign language its words must be learned...
Distributed database systems represent collections of nodes connected to the network, each node being a database that communicates and collaborates with the other databases so that the user can access data from anywhere within the network, in a transparent manner. Distributed database systems are mainly composed of distributed databases and the distributed database management system. Distributed...
A distributed system is defined as a collection of programs and processes that operate over a network of electronic equipment, in which each node has local autonomy, its own processing unit and memory and the nodes as a whole are transparent to the user in order to achieve the objective pursued. The defining features of distributed systems are: multiple nodes, resource sharing, competition...
Starting with June 1, 2019, the new version of REVISAL 6.0.7 is available. The application can be downloaded for free from the Labor Inspection website by any employer who wishes to use it. It is used for the establishment and completion of the general register of employees in electronic format, in accordance with the provisions of GD 905/2017. The Labor Inspectorate has drawn up a REVISAL...
Deep Web also called Deepnet, Invisible Web, Undernet or Hidden Web, is a portion of the Internet which belongs to the World Wide Web. Deep Web is not part of the Surface Web, which is indexed by standard search engines. It should not be confused with the dark Internet, or the Darknet file hosting and distribution network. Most of the information on the Internet is hidden in dynamically generated...
In English, the term proxy means an intermediary authorized to act on behalf of a person. A proxy server is an authorized intermediary of your PC and acts between your PC and the Internet. This server requests the pages and web services accessed on your behalf. A close concept and sometimes used in conjunction with a proxy server is VPN. Suppose you are at work, on a computer of the company you...
Tor, which stands as an acronym for The Onion Router, is free software that allows anonymity on the Internet through a close-by-close routing algorithm. In the Tor network, the generated online traffic is anonymous, without registering the list of search terms and without keeping track of the IPs from which the respective searches were initialized. Tor user activity cannot be detected due to a...
The IEEE802.16 standard “Air Interface for Fixed Broadband Wireless Access Systems” is also known as the IEEE WirelessMAN air interface. Worldwide Interoperability for Microwave Access (WiMAX) is a wireless technology that resembles Wi-Fi in that it relies on data transfer over radio waves, but is much faster, 70 Mbps compared to 54 Mbps over Wi-Fi and has a huge range, a few tens of...
A peer-to-peer network is a network architecture for distributed applications that share tasks with multiple partners. Peer-to-peer, or P2P in its abbreviated form, refers to computer networks that use a distributed architecture. This means that all computers or devices that are part of such a network share tasks. Devices that are part of a peer-to-peer network are called peers. There are no...