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A candidate key (or minimal superkey) is a superkey that can't be reduced to a simpler superkey by removing an attribute. [ 3 ] For example, in an employee schema with attributes employeeID , name , job , and departmentID , if employeeID values are unique then employeeID combined with any or all of the other attributes can uniquely identify ...
A Super key, located between the Control key and the Alt key, on an ISO style PC keyboard. Super key ( ) is an alternative name for what is commonly labelled as the Windows key [1] or Command key [2] on modern keyboards, typically bound and handled as such by Linux and BSD operating systems and software today.
Global Star Software [5] 350 Great Games: Microsoft Windows: 1997 Global Star Software [6] The Untouchable: Microsoft Windows: February 11, 2000: Creative Edge Studios [7] Tower of the Ancients: Microsoft Windows: February 13, 2000: Fiendish Games [8] Airport Tycoon: Microsoft Windows: April 25, 2000: Krisalis Software [9] Master of the Skies ...
A candidate key, or simply a key, of a relational database is any set of columns that have a unique combination of values in each row, with the additional constraint that removing any column could produce duplicate combinations of values. A candidate key is a minimal superkey, [1] i.e., a superkey that does not contain a smaller one. Therefore ...
The advantages of using a natural key to uniquely identify records in a relation include less disk space usage, the natural key is an attribute that is related to the business or the real world so in most cases, it is already being stored in the relation which saves disk space as compared to creating a new column for storing the surrogate key.
"Free and open-source software" (FOSS) is an umbrella term for software that is considered free software and/or open-source software. [1] The precise definition of the terms "free software" and "open-source software" applies them to any software distributed under terms that allow users to use, modify, and redistribute said software in any manner they see fit, without requiring that they pay ...
Quicksilver Software, Inc. was founded on May 1, 1984, by three former Mattel Electronics programmers: Bill Fisher, Stephen Roney, and Mike Breen. [1] The company specializes in the creation of strategy, simulation, and educational products, and on focused high-technology R&D projects.
Argonaut Games is a British video game developer founded in 1982. It was known for the Super NES video game Star Fox and its supporting Super FX chip, and for Croc: Legend of the Gobbos and the Starglider series.