Incomplete Information in Relational Databases

Computers and Intractability: A Guide to the Theory of NP-Completeness

1979 • 45,565 citations

A relational model of data for large shared data banks

1970 • 4,964 citations

A relational model of data for large shared data banks

1983 • 4,949 citations

Extending the database relational model to capture more meaning

1979 • 1,567 citations

Optimal implementation of conjunctive queries in relational data bases

1977 • 1,236 citations

On Closed World Data Bases

1978 • 1,021 citations

Principles of Database Systems

2018 • 904 citations

Towards a Logical Reconstruction of Relational Database Theory

1984 • 588 citations

Extending the data base relational model to capture more meaning

1979 • 525 citations

On semantic issues connected with incomplete information databases

1979 • 514 citations

Equivalences among Relational Expressions

1979 • 368 citations

On the foundations of the universal relation model

1984 • 294 citations

On Databases with Incomplete Information

1981 • 279 citations

Advances in Data Base Theory

1981 • 167 citations

Null values in data base management a denotational semantics approach

1979 • 138 citations

Null values in a relational data base

1977 • 121 citations

Formal Systems for Tuple and Equality Generating Dependencies

1984 • 113 citations

A Formal Approach to Null Values in Database Relations

1981 • 104 citations

The relational model of data and cylindric algebras

1984 • 91 citations

Functional dependencies and incomplete information

1980 • 82 citations

Proceedings of the 1983 ACM SIGMOD international conference on Management of data

1983 • 72 citations

On representing incomplete information in a relational data base

1981 • 61 citations

Database relations with null values

1982 • 59 citations

Understanding Relations (Installment #7).

1975 • 56 citations

Generalized joins

1976 • 52 citations

Incomplete information and dependencies in relational databases

1983 • 45 citations

On Relational Algebra with Marked Nulls.

1984 • 34 citations

On relational algebra with marked nulls preliminary version

1984 • 25 citations

Informational Systems with Incomplete Information.

1976 • 24 citations

Institute of computer science

1966 • 19 citations

Inverting relational expressions

1983 • 10 citations

A technique for translating states between database schemata

1982 • 8 citations

Efficient query evaluation in relational data bases with missing values

1981 • 5 citations

Editors' foreword

1984 • 2 citations

Editor's foreword

1982 • 1 citations