Skip to search formSkip to main content
You are currently offline. Some features of the site may not work correctly.

Valid time

Known as: Valid-time 
In temporal databases, valid time (VT) is the time period during which a database fact is valid in the modeled reality. As of December 2011, ISO/IEC… Expand
Wikipedia

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
2013
2013
We introduce the temporal component of the stRDF data model and the stSPARQL query language, which have been recently proposed… Expand
  • figure 1
  • figure 2
  • figure 3
Is this relevant?
2002
2002
In this paper we extend the XPath data model and query language to include valid time. XPath is a language for specifying… Expand
  • figure 1
  • figure 2
  • table 1
  • figure 3
  • figure 4
Is this relevant?
1999
1999
We present an approach, named MAP21, which uses standard B/sup +/-trees to provide efficient indexing of valid time ranges. The… Expand
Is this relevant?
1999
1999
The development of the World Wide Web technology on the Internet is a major achievement of computer research in recent years. The… Expand
  • table I
  • figure 5
  • figure 6
  • table II
Is this relevant?
Highly Cited
1998
Highly Cited
1998
In valid-time indeterminacy it is known that an event stored in a database did in fact occur, but it is not known exactly when… Expand
  • figure 1
  • figure 4
  • figure 5
  • table I
  • table II
Is this relevant?
1998
1998
To support temporal operators and to increase the efficiency of temporal queries, indexing based on temporal attributes is… Expand
  • figure 3.1
  • figure 3.2
  • figure 4.1
  • table 5.1
  • figure 5.1
Is this relevant?
Highly Cited
1996
Highly Cited
1996
This change proposal specifies the addition of tables with valid-time support into SQL/Temporal, and explains how to use these… Expand
  • figure 1
  • figure 2
  • figure 3
  • figure 4
  • figure 5
Is this relevant?
1994
1994
Abstract Research on time and data models for Geographical Information Systems (GIS) has focused mainly in the representation of… Expand
  • figure I
  • figure 2
  • figure 3
  • figure 4
  • figure 5
Is this relevant?
Highly Cited
1994
Highly Cited
1994
Joins are arguably the most important relational operators. Poor implementations are tantamount to computing the Cartesian… Expand
  • figure 1
  • figure 3
  • figure 4
  • figure 6
  • figure 5
Is this relevant?
1993
1993
In valid-time indeterminacy, it is known that an event stored in a temporal database did in fact occur, but it is not known… Expand
  • figure 1
  • figure 2
  • figure 3
  • figure 4
  • figure 5
Is this relevant?