Access Control in Geographic Databases

نویسندگان

  • Liliana Kasumi Sasaoka
  • Claudia Bauzer Medeiros
چکیده

The problem of access control in databases consists of determining when (and if) users or applications can access stored data, and what kind of access they are allowed. This paper discusses this problem for geographic databases, where constraints imposed on access control management must consider the spatial location context. The model and solution provided are motivated by problems found in AM/FM applications developed in the management of telephone infrastructure in Brazil, in a real life situation.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Geographic distribution of important cancers in Iran

Introduction: Each year, 10 million people are faced with cancer and about 6 million of them die throughout the world. This study aimed at investigating the geographical distribution of cancer and its environmental risk factors in Iran. Methods: The present study was mapping the available data collected from the reports of Iranian Center for Disease Control (Cancer Bureau) regarding the frequen...

متن کامل

Implementing Role Based Access Control for Federated Information Systems on the Web

There is rapidly increasing interest in Australia in on-line sharing of information stored in corporate databases, especially within and between staff of independent government agencies. Biological collections databases and population health GIS are good examples of the frequent situation where database custodians are looking for dynamic, distributed, heterogenous federated information system m...

متن کامل

A Study of the Application of Geographic Information Systems (GIS) in Children Access to Pharmacies: A Case Study of Kermanshah, West of Iran

Background Adequate access to health services has tremendous effects on the usefulness and efficiency of health care. Therefore, this study aimed to investigate the access of girls under the age of 14 years old to pharmacies in Kermanshah, Iran. Materials and Methods In this cross-sectional study, the access of Results In terms of access to 25 pharmacies through walking, the findings revealed ...

متن کامل

A Study of Children's Geographic Access to Health Services (Health Care Centers and Clinical Laboratories) in Kermanshah City, Iran

Background Given that the protection of children's health is of special importance due to their special age and physical conditions, the present study aimed to investigate the condition of children's Geographic access to health services (Health Centers and Clinical Laboratories) in Kermanshah city, Iran. Materials and Methods: In this applied study, the research approach was descriptive-analyti...

متن کامل

Geographic Indexing Mechanisms of Databases for Real-time Visualisation

Geographic visualisation and other real-time applications require efficient data access. An indexing mechanism, adapted to the characteristics of geographic data, can be used to improve retrieval of geographic data. This paper describes an indexing mechanism based on a method called Ellipsoidal Quadtree, EQT. EQT adapts the indexing structure of a database to the shape of the earth. EQT fulfils...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006