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SIGFIDET '72: Proceedings of 1972 ACM-SIGFIDET workshop on Data description, access and control
ACM1972 Proceeding
Publisher:
  • Association for Computing Machinery
  • New York
  • NY
  • United States
ISBN:
978-1-4503-7411-8
Published:
01 January 1972

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Some current issues in data description

The computer industry is currently devoting considerable time and energy to the subject of data description. Most software systems produced today provide some form of data description facility. Computer users and vendors have banded together to study ...

Article
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An approach to Stored Data Definition and Translation

The CODASYL Stored Data Definition and Translation Task Group has for the past two years been investigating the major components necessary in a language for data translation. Data translation is defined as the process whereby data that can be processed ...

Article
Free
An independent data definition facility for COBOL and FORTRAN

This paper describes the design of a system that allows the description of a data base independently from applications programs and independent of which languages (COBOL or FORTRAN) are used in the applications programs. The features of a new data ...

Article
Free
A concept paper on “Host” vs. “Own” data manipulation languages in military information systems

Although machine/program independent data description languages are difficult to achieve, there is no argument relative to the goals. This agreement as to goals is generally non-existent among those who seek to implement data manipulation languages (DML)...

Article
Free
A developmental model for data translation

A model for generalized data translation is presented. Data translation is defined as “the process whereby data stored in a form that can be processed on one computer (the source file) can be translated into a form (target file) which can be used by the ...

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A method for data translation using the Stored-Data Definition and Translation Task Group languages

The research done for this paper was part of the author's task as a member of the Stored-Data Definition end Translation Task Group. members of this group contributed many ideas and helpful criticisms. The author's work was supported by the Information ...

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An approach for a working relational data system

Users of large data bases and applications programs which access them must be prevented from having to know how the information they access is organized internally. On the other hand, systems programmers must be allowed to arrange the data base in some ...

Article
Free
Database sharing: A study of interference, roadblock and deadlock

It is the purpose of this paper to examine the problems of contention which arise naturally when a number of programs are granted simultaneous access to a database for the purpose of update as well as inquiry. A LOCK-UNLOCK mechanism, applied at the ...

Article
Free
Binary search trees and file organization

Binary search trees are an important technique for organizing large files, because they are efficient for both random and sequential access of records, and for modification of a file. Because of this, they have received a great deal of attention in ...

Article
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Hybrid trees: A data structure for lists of keys

A generalization of the binary tree and the Trie, called the hybrid tree, is defined in which a node can correspond to a key, to any substring in a key, or to a character of the alphabet from which the keys are formed. An algorithm is given for ...

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The associative-addressing capability on cylinder-memories and its applications - an abstract

In a previous paper [1], it had been shown that cylinder-memories, in particular magnetic drums and the cylinder parts of disks, can be used as associative memories. That paper, however, concentrated on a particular realization of a certain type of ...

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Article
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Retrieval efficiency using combined indices

The problem considered here involves choosing the best set of indices for indexing a file on a secondary storage device where space may be limited. For a general class of queries and a specific index organization, approximations to the expected ...

Article
Free
Architecture Definition Technique: Its objectives theory, process, facilities, and practice

The Architectural Definition Technique (ADT) is an approach to arriving at a complete, concise, non-ambiguous functional specification of a software or hardware system which is totally independent of packaging considerations. The Architecture Definition ...

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Implications of data independence on the architecture of database management systems

Data independence is a relatively new concept in database management technology. In essence, the objective of data independence is the insulation of application programs from the underlying database management system. The remarkably widespread ...

Article
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An approach to proving the correctness of data base operations

Work on the development of a precise semantic model for data base systems is presented. Our model is intended to provide a formal basis for investigating suitable semantic principles for data base systems where many users may be performing tasks ...

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Concepts of a Data Independent Accessing Model

The Data Independent Accessing Model (DIAM) represents a constructive combination of the formal mathematical and the evolutionary pragmatic approaches to a Generalized Data Base Management System. It aims at a complete separation between the user's (...

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Specifications in a Data Independent Accessing Model

The Data Independent Accessing Model (DIAM) Project of the Information Sciences Department of IBM Research is directed towards developing an architectural basis for an advanced data base system - a data base system which, in addition to providing ...

Article
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File structures and access methods for a geographic information retrieval system

This paper describes the file structures and access methods being used in the Geographic Data System of the Natural Information Systems Project at the University of British Columbia. These structures are designed to support a general input-output ...

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An Integrated Corporate Data Base concept and its application

The evolution of computer commercial applications has gone from simple, repetitive accounting to extremely complex information systems. The ability to support the multiplicity of applications and information needs of a business entity with a corporate ...

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