Accessing Distributed WFS Data Through A RDF Query Interface
نویسندگان
چکیده
منابع مشابه
Adaptive and Optimized RDF Query Interface for Distributed WFS Data
Web Feature Service (WFS) is a protocol for accessing geospatial data stores such as databases and Shapefiles over the Web. However, WFS does not provide direct access to data distributed in multiple servers. In addition, WFS features extracted from their original sources are not convenient for user access due to the lack of connection to high-level concepts. Users are facing the choices of eit...
متن کاملDistributed RDF Query Answering with Dynamic Data Exchange
Evaluating joins over RDF data stored in a shared-nothing server cluster is key to processing truly large RDF datasets. To the best of our knowledge, the existing approaches use a variant of the data exchange operator that is inserted into the query plan statically (i.e., at query compile time) to shuffle data between servers. We argue that such approaches often miss opportunities for local com...
متن کاملDistributed query processing for federated RDF data management
The publication of freely available and machine-readable information has increased significantly in the last years. Especially the Linked Data initiative has been receiving a lot of attention. Linked Data is based on the Resource Description Framework (RDF) and anybody can simply publish their data in RDF and link it to other datasets. The structure is similar to the World Wide Web where indivi...
متن کاملTranslating WFS Query to SQL/XML Query
The purpose of the WFS specification, proposed by the the OpenGIS Consortium (OGC), is to describe the manipulation operations over geospatial data using GML. Web servers providing WFS service are called WFS Servers. WFS servers publish GML views of geographic features stored in data sources such that the user can query and update data sources through a user defined feature type schema. In this...
متن کاملQuery Processing for RDF Data
The World Wide Web today is a huge network of information resources which was built in order to broadcast information for human users. Consequently, most of the information on the Web is designed to be suitable for human consumption: the structuring principles are weak, many different kinds of information co-exist, and most of the information is represented as free text. With the increasing siz...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Conference on GIScience Short Paper Proceedings
سال: 2016
ISSN: 2573-783X
DOI: 10.21433/b3119fs8s68v