The information needed to build a data model is gathered during the requirments analysis. Although not formally considered part of the data modeling stage by some. methodologies, in reality the requirements analysis and the ER diagramming part of the. data model are done at the same time.
These documents are authoritative and time-tested consensus agreements. Use of the standard AIA documents provides the building owner, the architects and the contractors with a comprehensive and cohesive set of documents for a particular project.
, Travel Agent and airline enthusiast. An online travel agency or OTA allows you to book flight tickets,holiday packages, hotel rooms, train tickets etc sitting in you room using a phone or a computer. An OTA or a travel website is fully dedicated to travel. A travel website consists of the following: Flight API, Hotel API, Car Rental API etc. GDS.