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A categorical entity-relationship model of databases

M.Z. Bleyberg

Open publisher page 1 citations

Abstract

The major objective of the author is to develop a highly abstract model for databases: the categorical entity-relationship (CER) model. This model is based on a unified view of the entity-relationship and relational database models. Central to the CER model is the concept of an entity-relationship (ER) object. The concept of a key defines the identity of an ER-object. An ER-object with an atomic key represents a database entity; an ER-object with a composite key represents a database relationship. The concept of a schema represents the type of an ER-object. Operations are defined on ER-objects. The role is to define the structure of a database, to update a database, and to derive information from a database. This model provides a sufficiently rich basis for designing and implementing entity-relationship and relational databases as object-oriented systems.>

About this research paper

What this paper is about

The major objective of the author is to develop a highly abstract model for databases: the categorical entity-relationship (CER) model. This model is based on a unified view of the entity-relationship and relational database models. Central to the CER model is the concept of an entity-relationship (ER) object. The concept of a key defines the identity of an ER-object. An ER-object with an atomic key represents a database entity; an ER-object with a composite key represents a database relationship. The concept of a schema represents the type of an ER-object. Operations are defined on ER-objects. The role is to define the structure of a database, to update a database, and to derive information from a database. This model provides a sufficiently rich basis for designing and implementing entity-relationship and relational databases as object-oriented systems.>

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Available abstract

The major objective of the author is to develop a highly abstract model for databases: the categorical entity-relationship (CER) model. This model is based on a unified view of the entity-relationship and relational database models. Central to the CER model is the concept of an entity-relationship (ER) object. The concept of a key defines the identity of an ER-object. An ER-object with an atomic key represents a database entity; an ER-object with a composite key represents a database relationship. The concept of a schema represents the type of an ER-object. Operations are defined on ER-objects. The role is to define the structure of a database, to update a database, and to derive information from a database. This model provides a sufficiently rich basis for designing and implementing entity-relationship and relational databases as object-oriented systems.>

Key concepts: Database schema, Computer science, Database model, Entity–relationship model, Database design, Semi-structured model, Relational database, Database

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