XML has become an important medium for data exchange, and is also used as an interface to – i.e. a view of – a relational database. While previous work has considered XML views for the purpose of querying relational databases (e.g. Silkroute), in this paper we consider the problem of updating a relational database through an XML view. Using the nested relational algebra as the formalism for an ...

This paper proposes a generic relational-database schema that can efficiently accommodate various types of GIS data. The proposed schema complies with the OpenGIS Simple Features Specification for SQL developed by OGC (OpenGIS Consortium) and can be used for any geographic application whose geographic objects are represented based on 2D geometry with linear interpolation between vertices. The g...

This article explores the differences between relational databases (RDBMS) and You should have looked into the property-graph model and optionally read especially for join heavy queries, the minutes to milliseconds advantage that Even object-relational mappers use SQL under the hood to talk to the database. When you write applications that communicate with a relational database, your created a ...

We show how geographic data sets that are available in a proprietrary file format only, can be web-enabled by using an object-relational database system. In particular we propose a database schema for official cartographic-topographic (ATKIS) base data implemented in Oracle8i to store and manage such data sets in an object-structured way. We have implemented an import routine for such data into...

1, 2 a 3 Jose Galindo, * Juan Miguel Medina, M Carmen Aranda ́ Departamento Lenguajes y Ciencias de la Computacion, Universidad de ́ Malaga, E.T.S.I. Informatica 29071 Malaga, Spain ́ ́ ́ Departamento Ciencias de la Computacion e I.A., Universidad de Granada, ́ Av Andalucia no 38, 18071 Granada, Spain Departamento Lenguajes y Ciencias de la Computacion, Universidad de ́ Malaga, E.T.S.I. Informatica 29...

A meta-answer is a set of statements that assert various properties of an answer to a database uery. These statements may qualify the validity or the completeness o 1 the answer, or they may characterize the answer abstractly. Meta-answers add meaning and insight to standard database answers. We describe an extension to the relational database model for representing properties of the stored dat...

In this paper, we propose an approach for building an object front-end on top of a relational database. The object front-end can be used as the interface for integration with other object databases. The users are allowed to access data stored in the relational database using an object query language. A set of derivation rules is provided to construct an object view from the relational schema. T...

Software maintainability is a very important quality attribute. Its prediction for relational database-driven software applications can help organizations improve the maintainability of these applications. The research presented herein adopts a survey-based approach where a survey was conducted with 40 software professionals aimed at identifying and ranking the important maintainability predict...