The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Computable queries for relational data bases
Open accessOverview
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Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
A relational model of data for large shared data banks
Codd, E. F. (1970) · Communications of the ACM · doi:10.1145/362384.362685 · Cited by 5,547
Cited by
Logic and Databases: A Deductive Approach
Gallaire, H., Minker, J., & Nicolas, J.-M. (1984) · ACM Computing Surveys · doi:10.1145/356924.356929 · Cited by 733
Elements of Relational Database Theory
KANELLAKIS, P. C. (1990) · Formal Models and Semantics · doi:10.1016/b978-0-444-88074-1.50022-6 · Cited by 259
Principles of programming with complex objects and collection types
Buneman, P., Naqvi, S., Tannen, V., & Wong, L. (1995) · Theoretical Computer Science · doi:10.1016/0304-3975(95)00024-q · Cited by 256
Metadata
- Authors
- chandra, A. K., & Harel, D.
- Venue
- Journal of Computer and System Sciences
- Publisher
- Elsevier BV
- Published
- 1980-10
- Volume
- 21
- Issue
- 2
- Pages
- 156-178
- ISSN
- 0022-0000 (ISSN-L)
- OpenAlex
- W2161609549
- Cited by
- 437
- References
- 1
- FWCI
- 8.35
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Computable queries for relational data bases. https://app.cochat.ai/papers/10.1016/0022-0000(80)90032-x
- The paper
- chandra, A. K., & Harel, D. (1980). Computable queries for relational data bases. Journal of Computer and System Sciences. https://doi.org/10.1016/0022-0000(80)90032-x
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
