Abstract data types for the logical modeling of complex data

A relational model of data for large shared data banks

E. F. Codd · Communications of the ACM · 1970 · 5.2K citations · Full text

Relational Database, Engineering, Computer Architecture +23

A relational model of data for large shared data banks

E. F. Codd · Communications of the ACM · 1983 · 4.8K citations

Relational Database, Engineering, Computer Architecture +23

Principles of database and knowledge-base systems

Choice Reviews Online · 1989 · 2.7K citations

Relational Database, Engineering, Databases +17

Direct spatial search on pictorial databases using packed R-trees

Nick Roussopoulos, Daniel B. Leifker · 1985 · 344 citations

Engineering, Geographic Information Retrieval, Image Database +17

Reusability: The Case for Object-Oriented Design

Bertrand Meyer · IEEE Software · 1987 · 310 citations

Software Maintenance, Engineering, Model Reuse +20