# XML Warehousing and OLAP

## TL;DR

This paper reviews XML warehousing and OLAP approaches, discusses challenges and future trends, and proposes a unified XML data warehouse architecture with XOLAP operators expressed in XML algebra.

## Contribution

It provides a comprehensive overview of XML warehousing and OLAP, introduces a unified architecture, and formalizes XOLAP operators using XML algebra.

## Key findings

- Overview of major XML warehousing approaches
- Design of a unified XML data warehouse architecture
- Definition of XOLAP operators in XML algebra

## Abstract

The aim of this article is to present an overview of the major XML warehousing approaches from the literature, as well as the existing approaches for performing OLAP analyses over XML data (which is termed XML-OLAP or XOLAP; Wang et al., 2005). We also discuss the issues and future trends in this area and illustrate this topic by presenting the design of a unified, XML data warehouse architecture and a set of XOLAP operators expressed in an XML algebra.

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Source: https://tomesphere.com/paper/1701.08612