The programmer as navigator

ABSTRACT

This year the whole world celebrates the five-hundredth birthday of Nicolaus Copernicus, the famous Polish astronomer and mathematician. In 1543, Copernicus published his book, Concerning the Revolutions of Celestial Spheres, which described a new theory about the relative physical movements of the earth, the planets, and the sun. It was in direct contradiction with the earth-centered theories which had been established by Ptolemy 1400 years earlier.

REFERENCES

• 1: A general purpose programming system for random access memories (with S.B. Williams). Proc. AFIPS 1964 FJCC, Vol. 26, AFIPS Press, Montvale, N.J., pp. 411-422.
• 2: Integrated Data Store. DPMA Quarterly (Jan. 1965).
• 3: Software for random access processing. Datamation (Apr. 1965), 36-41.
• 4: Integrated Data Store-Case Study. Proc. Sec. Symp. on Computer-Centered Data Base Systems sponsored by ARPA, SDC, and ESD, 1966.
• 5: Implementation techniques for data structure sets. Proc. of SHARE Working Conf. on Data Base Systems, Montreal, Canada, July 1973.
• 6: The evolution of data structures. Proc. NordDATA Conf., Aug. 1973, Copenhagen, Denmark, pp. 1075 1093.
• 7: Charles W. Bachman, Data structure diagrams, ACM SIGMIS Database, v.1 n.2, p.4-10, Summer 1969 [doi>10.1145/1017466.1017467]
• 8: a Set concepts for data structures. In Encyclopedia of Computer Science, Amerback Corp. (to be published in 1974).

INDEX TERMS

Keywords:
Ptolemy, Weyerhaeuser, access method, attributes, calculated addressing, celestial mechanics, clustering, contamination, database, database key, database set, deadlock, deadly embrace, entity, hash addressing, member, overflow, owner, primary data key, relationship, retrieval, secondary data key, sequential file, shared access, update