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A Data Mapper is a Data Access Layer that performs bidirectional transfer of data between a persistent data store (often a relational database) and an in-memory data representation (the domain layer). The goal of the pattern is to keep the in-memory representation and the persistent data store independent of each other and the data mapper itself.
As of January 15, 2003, Lufthansa, the German airline, became the first airline globally to provide in-flight Internet service to its passengers, following a series of preliminary tests and through an alliance with Connexion by Boeing, which began developing in-flight Internet connections using Ethernet and 802.11 WI-FI.
On November 13, 2015, the company demonstrated 2Ku for two dozen aviation and technology reporters aboard a Boeing 737. The system was able to stream high-definition videos. It was a small horde of “data-hungry journalists on board all trying to kill the system,” said Jason Rabinowitz, manager of data research for Routehappy. [29]
The W3C introduced R2RML as a standard for mapping data in a relational database to data expressed in terms of the Resource Description Framework (RDF). In the future, tools based on semantic web languages such as RDF, the Web Ontology Language (OWL) and standardized metadata registry will make data mapping a more automatic process.
DataMapper is an object-relational mapper library written in Ruby that follows the active record pattern even though the name implies it follows the data mapper pattern.While DataMapper 1 may not have achieved total decoupling between object and database suggested by the data mapper pattern, it appears DataMapper 2 intended to change this (a la Virtus, a library adapted from DataMapper). [1]
Hazardous Inflight Weather Advisory Service (HIWAS [1]) was a continuous broadcast of hazardous weather information which is transmitted over selected VORs. This hazardous weather includes AIRMETs , SIGMETs , Convective SIGMETs, Center Weather Advisories (CWAs), Severe Alert Weather Watches (AWWs), and urgent PIREPs .
SITAONAIR (then OnAir) was the first company to provide integrated GSM and inflight wifi services, with Oman Air as the launch airline in March 2010. [5] SITAONAIR's technology has been certified for use on many types of aircraft – both private and commercial jets including Boeing and Airbus – for short and long haul.
Wireless networking – A technique of mapping and uploading the exact or accurate location of a wireless network is called wardriving. It uses signal-strength data from the wireless adapter and GPS to identify the location. Kismet for Linux is a widely used wardriving program. Wreck diving – A popular variant of scuba diving is known as ...