Models, languages and architectures for geografical data bases / Modelos, linguagens e arquiteturas para bancos de dados geograficos

AUTOR(ES)
DATA DE PUBLICAÇÃO

1995

RESUMO

The aim of this thesis is to study the issues of design and implementation of geographical data bases. The subject is dealt with in a comprehensive manner, including discussions on the issues of modelling, query and manipulation languages and distributed architectures. Such an approach is meant to give a solid conceptual basis for the development of the next generation of geographical information systems (GIS) at INPE. The work is divided into three parts. The first part (chapters 2 and 3) includes a general presentation of GIS technology and discusses its evolution. The main conclusion is the emergence of a new paradigm in this arena, based on advances on the areas of distributed systems and query and manipulation languages. Data model and languages are the subject of the second part of this document. Chapter 4 presents an object-oriented data model for geographical data, which serves as a basis for the classification of geographical operations, the subject of chapter 5. Chapter 6 proposes a geographical query and manipulation language, which is based on this classification. The third part of the document covers architectures for geographical data base management systems (GDBMS). Chapter 7 analyses alternatives for GDBMS architectures. Based on the requirements for the new generation of GISs (chapter 3) and on the language for GIS operations, the chapter proposes a distributed architecture. Chapter 8 discusses the problems involved in imp the proposed architecture.

ASSUNTO(S)

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