U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Hyperedge entity-relationship data base systems

Patent 4479196 Issued on October 23, 1984. Estimated Expiration Date: Icon_subject November 15, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Magnetic bubble domain relational data base system
Patent #: 4128891
Issued on: 12/05/1978
Inventor: Lin ,   et al.

Bubble domain relational data base system
Patent #: 4221003
Issued on: 09/02/1980
Inventor: Chang ,   et al.

On-chip bubble domain relational data base system Patent #: 4283771
Issued on: 08/11/1981
Inventor: Chang

Inventors

Assignee

Application

No. 06/441730 filed on 11/15/1982

US Classes:

707/100DATABASE SCHEMA OR DATA STRUCTURE

Examiners

Primary: Zache, Raulfe B.

Attorney, Agent or Firm

International Class

H04Q 3/47 (20060101)

Abstract

A data base management system is disclosed in which data entities are records representing nodes in an entity-relationship directed graph. The body of each node represents one of the physical entities to be utilized while the edges of each node represent relationships between that physical entity and other physical entities. Some of the edges are hyperedges to permit the identification of simultaneous relationships with more than one other node. An application of this system to the assignment of telephone outside plant equipment to telephone subscribers is also described.

Other References

  • Cattell, G. G., "An Entity-Based Database User Interface", Proc. ACM-SIGMOD., May 14-16, 1980, pp. 144-150
  • "Graphs and Hypergraphs", North Holland Company, 1973, pp. 389-413
  • Chen, P., "The Entity-Relationship--Toward a Unified View of Data", ACM Trans. on Database Systems, Mar. 1976, pp. 9-36
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