An ER Calculus for the Entity-Relationship Complex Model

@inproceedings{Parent1989AnEC,
  title={An ER Calculus for the Entity-Relationship Complex Model},
  author={Christine Parent and H{\'e}l{\`e}ne Rolin and Kokou Y{\'e}tongnon and Stefano Spaccapietra},
  booktitle={ER},
  year={1989}
}
The entity-relationship (ER) approach still lacks sound and complete theoretical foundations for modern, more sophisticated, ER models. We already proposed an algebra as a basis for data manipulation languages for such an advanced ER model, called ERC. The aim of this paper is to formally define a companion ERC calculus. We first investigate a general… CONTINUE READING