Does Semantic tools like Anzo create a copy of data?

Question

I'm new to semantic technologies. I understand what RDF, OWL and Ontologies and other basic terminologies are and how semantic search uses them. When we create a semantic search module using anzo with enterprise search capabilities. It connects with various data sources and creates relationship between them. Now I'm interested in knowing what a semantic tool like anzo does internally.

1. Does it creates a copy of data on local machine or it hits data sources every time we execute a SPARQL query
2. If it stores data, is this data stored in its row format or data is stored after cleaning and creating semantic relation between them.
3. What happens to data after query is executed. How does it get current data every time?

Any thoughts over it would be valuable for me.

Thanks a lot in advance!

Answer 1

根据您的评论，您似乎正在使用Anzo Graph Query Engine？如果是这样，那么问题的答案是

1. 数据副本保存在内存中
2. 任何已发布的信息都不清楚。
3. 它没有。您需要使用＆＃39; LOAD＆＃39;加载数据。命令。

更多关于3：您将负责实施一种机制，使数据与此基础数据源保持同步。 （这可能就像从夜间转储重建图形或尝试针对在图形上复制CRUD操作的底层存储实现更改数据捕获一样简单）

我的答案基于CambridgeSemantics网站上的营销和support information。