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The enhanced entity–relationship ( EER) model (or extended entity–relationship model) in computer science is a high-level or conceptual data model incorporating extensions to the original entity–relationship (ER) model, used in the design of databases . It was developed to reflect more precisely the properties and constraints that are ...
Entity–relationship model. An entity–attribute-relationship diagram for an MMORPG using Chen's notation. An entity–relationship model (or ER model) describes interrelated things of interest in a specific domain of knowledge. A basic ER model is composed of entity types (which classify the things of interest) and specifies relationships ...
Users. 30 million (as of 2024) G2A.COM Limited (commonly referred to as G2A) is a digital marketplace headquartered in the Netherlands, [ 1][ 2] with offices in Poland and Hong Kong. [ 3][ 4] The site operates in the resale of gaming offers and others digital items by the use of redemption keys. G2A.COM’s main offerings are game key codes for ...
Airline reservations system. Airline reservation systems ( ARS) are systems that allow an airline to sell their inventory (seats). It contains information on schedules and fares and contains a database of reservations (or passenger name records) and of tickets issued (if applicable). ARSs are part of passenger service systems (PSS), which are ...
Bleeding and in pain, Kyleigh Thurman didn’t know her doomed pregnancy could kill her. Emergency room doctors at Ascension Seton Williamson in Texas handed her a pamphlet on miscarriage and told ...
v. t. e. The Government of South Korea is the national government of the Republic of Korea, created by the Constitution of South Korea as the executive, legislative and judicial authority of the republic. The president acts as the head of state and is the highest figure of executive authority in the country, followed by the prime minister and ...
Database design. Database design is the organization of data according to a database model. The designer determines what data must be stored and how the data elements interrelate. With this information, they can begin to fit the data to the database model. [ 1] A database management system manages the data accordingly.
Enterprise resource planning ( ERP) is the integrated management of main business processes, often in real time and mediated by software and technology. ERP is usually referred to as a category of business management software —typically a suite of integrated applications —that an organization can use to collect, store, manage and interpret ...