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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 that can exist between entities (instances of those entity types).
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 originally named Genesys and was marketed successfully in France and later Canada. It could also handle ER diagram design. It was ported to SCO Unix, SunOs, DEC 3151's and Windows 3.0 platforms, and was later migrated to succeeding Microsoft operating systems, utilising XVT for cross operating system graphical portability. The tool was ...
The MARS-1 train ticket reservation system was designed and planned in the 1950s by the Japanese National Railways' R&D Institute, now the Railway Technical Research Institute, with the system eventually being produced by Hitachi in 1958. [6] It was the world's first seat reservation system for trains. [7]
A sekitori (関取) is a rikishi (力士, sumo wrestler) who is ranked in one of the top two professional divisions: makuuchi and jūryō. [1] The name literally translates to having taken the barrier, as only a relatively small fraction of those who enter professional sumo achieve sekitori status. Currently there are 70 rikishi in these divisions.
Next Generation e-Ticketing (NGeT): The Internet-based E-ticketing reservation system, developed for IRCTC, that connects at the back-end to PRS. [7] Computerization of Indian Railways' Unreserved Ticketing System: Unreserved ticketing is a major component of IR's ticket volume, and an important source of revenue.
Visual schema/E-R design: the ability to draw entity-relationship diagrams for the database. If missing, the following two features will also be missing; Reverse engineering - the ability to produce an ER diagram from a database, complete with foreign key relationships
Reservation system may refer to Computer reservation system. Airline reservation system; Reservation in India; Indian reservations, lands governed by Native American ...
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