Results 71 to 80 of about 2,980 (171)

South African Labiatae

open access: yesBothalia: African Biodiversity & Conservation, 1961
THORNCROFTIA
L. E. Codd
doaj   +1 more source

Determination of the normalization level of database schemas through equivalence classes of attributes [PDF]

open access: yesComputer Science Journal of Moldova, 2009
In this paper, based on equivalence classes of attributes there are formulated necessary and sufficient conditions that constraint a database schema to be in the second, third or Boyce-Codd normal forms. These conditions offer a polynomial complexity for
Cotelea Vitalie
doaj  

The Schiotia Species of Southern Africa.

open access: yesBothalia: African Biodiversity & Conservation, 1956
No abtract ...
L. E. Codd
doaj   +1 more source

Labiatae

open access: yesBothalia: African Biodiversity & Conservation, 1973
The Genus Rabdosia in South ...
L. E. Codd
doaj   +1 more source

A. E. Codd [PDF]

open access: yesThe Classical Review, 1917
openaire   +1 more source

Fehlererkennende Registermaschinen in Codd's Zellularraum

open access: yes, 1984
Am Beispiel von Codd's Raum wird gezeigt, wie sich das berechnungsuniverselle Konzept von Registermaschinen in einem Zellularraum so implementieren läßt, daß beim Lösen rekursiver Aufgaben erreichte Zellen selbstätig auf Defekte getestet und mögliche Rechenfehler erkannt werden.
Wachsmuth, Ipke   +2 more
openaire   +1 more source

On the Codd Semantics of SQL Nulls

open access: yes, 2017
Theoretical models used in database research often have subtle differences with those occurring in practice. One particular mismatch that is usually neglected concerns the use of marked nulls to represent missing values in theoretical models of incompleteness, while in an SQL database these are all denoted by the same syntactic NULL object.
Guagliardo, Paolo; id_orcid 0000-0003-0756-5787   +1 more
openaire   +1 more source

<i>julius seizure</i> acts within <i>teashirt</i> -expressing neurons to protect <i>Drosophila melanogaster</i> from bang-sensitivity. [PDF]

open access: yesMicroPubl Biol
Dean DM   +12 more
europepmc   +1 more source

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