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SIGFIDET '71: Proceedings of the 1971 ACM SIGFIDET (now SIGMOD) Workshop on Data Description, Access and Control
ACM1971 Proceeding
Publisher:
  • Association for Computing Machinery
  • New York
  • NY
  • United States
Conference:
San Diego California November 11 - 12, 1971
ISBN:
978-1-4503-7300-5
Published:
11 November 1971
Sponsors:

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Abstract

No abstract available.

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SESSION: Papers: session 3A
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Normalized data base structure: a brief tutorial

Casual and other users of large formatted data bases need a simple tabular (relational) view of the data rather than a network or tree-structured view. This paper illustrates the removal of repeating groups, hierarchic and plex structures, and cross-...

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Unacceptable file operations in a relational data base

This paper is written within the context of a relational data base model as presented by E. F. Codd in [1]. It also serves as a companion paper to his paper [2].

The central thesis is that a file operation should not produce unexpected 'side effects' in ...

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A data base sublanguage founded on the relational calculus

Three principal types of language for data base manipulation are identified: the low-level, procedure-oriented (typified by the CODASYL-proposed DML), the intermediate level, algebraic (typified by the Project MAC MacAIMS language), and the high level, ...

SESSION: Papers: session 3B
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SESSION: Papers: session 5A
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On the architecture of data base systems
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File definition and logical data independence

This paper presents an architecture for a data base system which is capable of providing data independence at two levels, viz physical and logical. The architecture employs a schema, which gives an abstract picture of the physical data base, and a ...

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Storage structure and physical data independence

This paper presents the results of an investigation into the feasibility of physical data independence in a data base system. In theory physical data independence may be achieved by providing a picture of the data which remains invariant as the ...

SESSION: Papers: session 5B
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Efficient batch updating of a random file
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Storage optimization of tree structured files representing descriptor sets

It is shown that the total node requirements for tree structured files can be minimized without significantly affecting the search time. However, search times are determined primarily by type of use, and the particular implementation of tree structured ...

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Binary B-trees for virtual memory

A class of binary trees is described for maintaining ordered sets of data. Random insertions, deletions, and retrievals of keys can be done in time proportional to log N where N is the cardinality of the data-set. Binary B-trees are a modification of B-...

SESSION: Papers: session 6A
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Data privacy and integrity: an overview
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A model for access control

The problems of authorization for a multiple-user resource sharing data processing system are discussed. The requirements for access of objects to other objects are covered in some detail. A model is then developed in which the above requirements are ...

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SESSION: Papers: session 6B
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The evolution of data base management at A. O. Smith
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Information retrieval with large-scale geographic data bases

There has been growing interest in dealing with large-seale geographic data bases because of the growing capacities of computer systems and because of the increasing interest in environmental and social systems. This paper outlines the problems ...

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Contributors
  • IBM Research - Almaden
  • Logicon Inc.

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