The designers of a database typically begin by developing a Data model to construct a logical representation of the database before it is implemented.
What is a data model?
A data model in database is a type of data model that determines the logical structure of a database. It fundamentally determines in which manner data can be stored, organized and manipulated. They are three primary data models namely: relational, dimensional, and entity-relationship (E-R).
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Each of the 20 people has 19 other people to communicate to. If you add that all up you get 20*19 paths, but then each path is counted twice (back and forth), so we divide this by 2. 20*19/2 = 190.
The general forumula is n(n-1)/2
An Average of 10 times faster.
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<span>Google
Glass was interesting; a personal screen overlaid onto the real world,
with 'augmented reality' ideas. The Nintendo 3DS was the first 'no
glasses' portable 3D system.
So I predict Google 3D Glasses with built in Dolby 9.1 sound emulation. </span>
