SuperKey


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SuperKey

An earlier PC keyboard macro processor from Borland that lets users create keyboard macros, rearrange the keyboard and encrypt data and programs.
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It means, that if whenever a set X determines functionally an attribute A, then X is a superkey, i.
Therefore, external name values are not required to uniquely identify a component nor to be minimal, and in this respect differ from the apparently similar notions of key and superkey in relational databases, and of object's external name in object-oriented databases.
An important problem in database design is that of deciding whether there is a superkey for R with respect to F of cardinality k or less.
Load any memory resident software that you routinely use, such as Sidekick or Superkey (both from Borland International, Scotts Valley, Calif.
Possible solutions include using a package like Superkey to define a hot key for executing a batch file or Saber Menu System, from Saber Software, which could do the menuing, screen-dimming, and re-initializing of the software after each inactivity period.
The two-year agreement appoints SoftKat sole distributor of Bytes of Learning's Superkey and Superkey Class Pack products, which teach keyboarding skills.
v] Y, (1) X is a temporal superkey of the scheme (this is analogous to the requirement for traditional BCNF), and (2) there is no temporal redundancy due to the fact that two different time ticks of [Mu] belong to the same time tick of v.
Other topics include foreign superkeys and constant references, scalable query dissemination in XPeer, stream processing in a relational database, Kruskal's algorithm for query tree optimization, and a web database security model using the host identity protocol.