R
Raymond A. Lorie
Researcher at IBM
Publications - 50
Citations - 9788
Raymond A. Lorie is an academic researcher from IBM. The author has contributed to research in topics: Database design & Relational database. The author has an hindex of 28, co-authored 50 publications receiving 9631 citations.
Papers
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Proceedings ArticleDOI
Access path selection in a relational database management system
TL;DR: System R as mentioned in this paper is an experimental database management system developed to carry out research on the relational model of data, which chooses access paths for both simple (single relation) and complex queries (such as joins), given a user specification of desired data as a boolean expression of predicates.
Journal ArticleDOI
The notions of consistency and predicate locks in a database system
TL;DR: It is argued that a transaction needs to lock a logical rather than a physical subset of the database, and an implementation of predicate locks which satisfies the consistency condition is suggested.
Journal ArticleDOI
System R: relational approach to database management
Morton M. Astrahan,M. W. Blasgen,Donald D. Chamberlin,Kapali P. Eswaran,Jim Gray,P. P. Griffiths,W. F. King,Raymond A. Lorie,Paul McJones,J. W. Mehl,G. R. Putzolu,Irving L. Traiger,B. W. Wade,V. Watson +13 more
TL;DR: This paper contains a description of the overall architecture and design of the system, and emphasizes that System R is a vehicle for research in database architecture, and is not planned as a product.
Journal ArticleDOI
The Recovery Manager of the System R Database Manager
Jim Gray,Paul McJones,M. W. Blasgen,Bruce G. Lindsay,Raymond A. Lorie,T. G. Price,Franco Putzolu,Irving L. Traiger +7 more
TL;DR: The recovery subsystem of an experimental data management system is described and evaluated and the DO-UNDO-REDO protocol allows new recoverable types and operations to be added to the recovery system.
Journal ArticleDOI
SEQUEL 2: a unified approach to data definition, manipulation, and control
Donald D. Chamberlin,Morton M. Astrahan,Kapali P. Eswaran,P. P. Griffiths,Raymond A. Lorie,J. W. Mehl,Phyllis Reisner,B. W. Wade +7 more
TL;DR: SEQUEL 2 is a relational data language that provides a consistent, English keyword-oriented set of facilities for query, data definition, data manipulation, and datac ontrol.