Null (SQL)

Known as: Sql case, NULLIF, C-table 
Null is a special marker used in Structured Query Language (SQL) to indicate that a data value does not exist in the database. Introduced by the… (More)
Wikipedia

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
Highly Cited
2018
Highly Cited
2018
The current approaches to false discovery rates (FDRs) in multiple hypothesis testing are usually based on the null distribution… (More)
  • table 1
  • table 2
  • table 3
  • table 4
  • table 5
Is this relevant?
Highly Cited
2011
Highly Cited
2011
The subventricular zone of many adult non-human mammals generates large numbers of new neurons destined for the olfactory bulb… (More)
  • figure 2
  • figure 1
  • figure 3
  • figure 4
Is this relevant?
Highly Cited
2009
Highly Cited
2009
Article history: Received 6 July 2008 Received in revised form 2 April 2009 Accepted 3 April 2009 Available online xxxx 
  • figure 1
  • figure 2
  • figure 4
  • figure 5
  • figure 7
Is this relevant?
Review
2009
Review
2009
APE1/Ref-1 (APE1), the mammalian ortholog of Escherichia coli Xth, and a multifunctional protein possessing both DNA repair and… (More)
  • figure 1
  • figure 2
  • figure 4
  • figure 6
Is this relevant?
Highly Cited
2006
Highly Cited
2006
Attack graphs are a valuable tool to network defenders, illustrating paths an attacker can use to gain access to a targeted… (More)
  • figure 1
  • figure 2
  • figure 3
  • table 1
  • figure 6
Is this relevant?
Highly Cited
2005
Highly Cited
2005
MOTIVATION A high density of single nucleotide polymorphism (SNP) coverage on the genome is desirable and often an essential… (More)
  • table 1
  • figure 1
Is this relevant?
Highly Cited
2002
Highly Cited
2002
In 1996 Koschmann (1996) suggested computer-supported collaborative learning (CSCL) as an emerging paradigm of educational… (More)
Is this relevant?
Highly Cited
1999
Highly Cited
1999
Tracking multiple targets is a challenging problem, especially when the targets are “identical”, in the sense that the same model… (More)
  • figure I
  • figure I
Is this relevant?
Highly Cited
1992
Highly Cited
1992
opaque-2 (o2) is a regulatory locus in maize that plays an essential role in controlling the expression of genes encoding the 22… (More)
  • figure 1
  • figure 3
  • figure 2
  • table 1
  • figure 4
Is this relevant?
Highly Cited
1990
Highly Cited
1990
The PVM system is a programming environment for the development and execution of large concurrent or parallel applications that… (More)
  • figure 1
  • figure 6
  • table 1
  • table 2
  • table 3
Is this relevant?