Stop the war!

Остановите войну!

solidarity - (ua) - (ru)
news - (ua) - (ru)
donate - donate - donate

for scientists:

ERA4Ukraine
Assistance in Germany
Ukrainian Global University
#ScienceForUkraine

default search action

combined dblp search
author search
venue search
publication search

Authors:

no matches

Venues:

no matches

Publications:

no matches

ask others

Google
Google Scholar
Semantic Scholar
Internet Archive Scholar
CiteSeerX
ORCID

"Nulls in Relational Databases: Revisited."

Name: dblp XML data dump
Creator: Schloss Dagstuhl - Leibniz Center for Informatics
Published: 1993
License: https://creativecommons.org/publicdomain/zero/1.0/
Keywords: dblp, XML, computer science, scholarly publications, metadata

help us
- How can I correct errors in dblp?
- contact dblp

Raju Kocharekar (1989)

Trier

Dagstuhl

> Home

Details and statistics

show external API response
- JSON @ openalex.org
see also:
- API doc @ openalex.org

DOI: 10.1145/382272.382416

access: closed

type: Journal Article

metadata version: 2020-03-06

- view
  - electronic edition via DOI
  - unpaywalled version
  authority control:
- export record
  dblp key:
  - journals/sigmod/Kocharekar89
- ask others
- share record
  persistent URL:
  - https://dblp.org/rec/journals/sigmod/Kocharekar89
Raju Kocharekar:
Nulls in Relational Databases: Revisited. SIGMOD Rec. 18(1): 68-73 (1989)

a service of

home
browse
search
- search dblp
- lookup by ID
about
nfdi
dblp is part of the
German National Research
Data Infrastructure (NFDI)
NFDI4DataScience
- events | twitter | publications
NFDIxCS
- events | twitter

manage site settings

To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.

Unpaywalled article links

Add open access links from to the list of external document links (if available).

load links from unpaywall.org

Privacy notice: By enabling the option above, your browser will contact the API of unpaywall.org to load hyperlinks to open access articles. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Unpaywall privacy policy.

Archived links via Wayback Machine

For web page which are no longer available, try to retrieve content from the of the Internet Archive (if available).

load content from archive.org

Privacy notice: By enabling the option above, your browser will contact the API of archive.org to check for archived content of web pages that are no longer available. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Internet Archive privacy policy.

Reference lists

Add a list of references from , , and to record detail pages.

load references from crossref.org and opencitations.net

Privacy notice: By enabling the option above, your browser will contact the APIs of crossref.org, opencitations.net, and semanticscholar.org to load article reference information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Crossref privacy policy and the OpenCitations privacy policy, as well as the AI2 Privacy Policy covering Semantic Scholar.

Citation data

Add a list of citing articles from and to record detail pages.

load citations from opencitations.net

Privacy notice: By enabling the option above, your browser will contact the API of opencitations.net and semanticscholar.org to load citation information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the OpenCitations privacy policy as well as the AI2 Privacy Policy covering Semantic Scholar.

OpenAlex data

Load additional information about publications from .

load data from openalex.org

Privacy notice: By enabling the option above, your browser will contact the API of openalex.org to load additional information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the information given by OpenAlex.

last updated on 2020-03-06 21:56 CET by the dblp team

all metadata released as open data under CC0 1.0 license

see also: Terms of Use | Privacy Policy | Imprint

dblp was originally created in 1993 at:

since 2018, dblp has been operated and maintained by:

the dblp computer science bibliography is funded and supported by: