SEQUEL 2: A Unified Approach to Data Definition, Manipulation, and Control

A relational model of data for large shared data banks

1983 • 4,949 citations

System R

1976 • 1,052 citations

SEQUEL

1976 • 567 citations

Query by example

1975 • 491 citations

An authorization mechanism for a relational database system

1976 • 400 citations

System R: Relational Approach to Database Management

1989 • 214 citations

INGRES

1975 • 188 citations

Use of Psychological Experimentation as an Aid to Development of a Query Language

1977 • 185 citations

Normalized data base structure

1971 • 172 citations

Organization and maintenance of large ordered indices

1970 • 162 citations

Views, authorization, and locking in a relational data base system

1975 • 141 citations

Functional specifications of a subsystem for data base integrity

1975 • 137 citations

Human factors evaluation of two data base query languages

1975 • 102 citations

Specifying queries as relational expressions

1975 • 100 citations

A multi-level relational system

1975 • 26 citations