The nested universal relation data model

The Nested Universal Relation Data Model

The Nested Universal Relation Database Model

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A Nested Relation Implementation for Semistructured Data

A simple implementation of nested relations also supports recursively nested trees of indefinite depth, directed acyclic graphs for sharing common subexpressions, cyclic graphs for links and cross-references, and union types for attributes. This can all be built without going beyond the capabilities of an algebra of flat relations which includes relational recursion. Its advantage is to offer s...

a study on insurer solvency by panel data model: the case of iranian insurance market

the aim of this thesis is an approach for assessing insurer’s solvency for iranian insurance companies. we use of economic data with both time series and cross-sectional variation, thus by using the panel data model will survey the insurer solvency.

Composition of the Universal Relation

We prove that the communication complexity of the k-fold composition of the universal relation on n bits is (1 o(1))kn when k = o( p n= logn). Warning: Essentially this paper has been published in Advances in Computational Complexity Theory and is hence subject to copyright restrictions. It is for personal use only.