Statistical relational tables for statistical database management
IEEE Transactions on Software Engineering
Equivalence of Relational Algebra and Relational Calculus Query Languages Having Aggregate Functions
Journal of the ACM (JACM)
A relational model of data for large shared data banks
Communications of the ACM
Data Base Organization for Data Management
Data Base Organization for Data Management
Alpha: An Extension of Relational Algebra to Express a Class of Recursive Queries
Proceedings of the Third International Conference on Data Engineering
An Application of Statistical Databases in Manufacturing Testing
Proceedings of the First International Conference on Data Engineering
Statistical Data Reduction for Manufacturing Testing
Proceedings of the Second International Conference on Data Engineering
Statistical Databases: Characteristics, Problems, and some Solutions
VLDB '82 Proceedings of the 8th International Conference on Very Large Data Bases
An algebra for statistical data
SSDBM'86 Proceedings of the 3rd international workshop on Statistical and scientific database management
SIAM: statistics information access method
SSDBM'86 Proceedings of the 3rd international workshop on Statistical and scientific database management
Statistical Relational Databases: Normal Forms
IEEE Transactions on Knowledge and Data Engineering
SSDBM'1988 Proceedings of the 4th international conference on Statistical and Scientific Database Management
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The problem is discussed of defining numerical operations on a relational database to accommodate the statistical analyses associated with a bivariate frequency table. An attempt has been made to extend Codd's relational algebra to include simple bivariate statistical operations preserving the closure of Codd's algebra. This extended algebra is applied to bivariate relational data structures needed for real-time automatic statistical quality control of a manufacturing process. Also discussed are some new category-numeric operations on relational tables.