tdb

首页 问题 全部问题 经济金融 企业管理 法律法规 社会民生 科学教育 健康生活 体育运动 文化艺术 电子数码 电脑网络 娱乐休闲 行政地区 心理分析 医疗卫生 精选 知道专栏 知道日报 知道大数据 知道非遗 用户  机构合作 知道福利 知道合伙人  芝麻团 芝麻将 日报作者 知道之星 开放平台 品牌合作 财富商城 特色 经验 宝宝知道 作业帮 手机版 我的知道 mysql把一个数据库中的数据复制到另一个数据库中的表 2个表结构相同  我来答 分享 举报 浏览 31689 次2个回答 #过年啦# 年夜饭应该在娘家吃还是婆家吃？ ice千 推荐于2017-10-04 1。表结构相同的表，且在同一数据库（如，table1,table2) Sql ：insert into table1 select * from table2 (完全复制) insert into table1 select distinct * from table2(不复制重复纪录） insert into table1 select top 5 * from table2 (前五条纪录) 2。 不在同一数据库中（如，db1 table1,db2 table2) sql: insert into db1..table1 select * from db2..table2 (完全复制) insert into

I'm struggling with the execution of a SPARQL query in Jena, with a resulting behaviour that I don't understand... I'm trying to query the Esco ontology ( https://ec.europa.eu/esco/download ), and I'm using TDB to load the ontology and create the model (sorry if the terms I use are not accurate, I'm not very experienced). My goal is to find a job position uri in the ontology that matches with the text I have previously extracted: ex: extracted term : " acuponcteur " -> label in ontology: "Acuponcteur"@fr -> uri: < http://ec.europa.eu/esco/occupation/14918 > What I call the "weird behaviour" is

I am trying to write propreties into a model and then query it.This part of mycode: String directory = "EMAILADDRESS" ; //create the dataset for the tdb store Dataset ds = TDBFactory.createDataset(directory) ; //create default rdf model ds.begin(ReadWrite.WRITE); Model model = ds.getDefaultModel() ; //write to the tdb dataset When I write this and then query the query shows no result ...but when I interchange the order of model and begin i.e. Model model = ds.getDefaultModel() ; //write to the tdb dataset ds.begin(ReadWrite.WRITE); Then it works fine!! but it sometimes gives this error: com.hp

Apologies, in advance, for a possible duplicate. I have an archive containing 117,426 files (each in the N-TRIPLES format) that I wish to load into the default graph of a TDB dataset. Due to the large number of files, I need to be able to perform this import without manually selecting individual files for upload. I am in Bash, with Jena and Fuseki distributions at my disposal. If possible, I want to avoid the worst-case scenario of just writing a java application to do this. If I have to write a java application for this, what hooks exist in RIOT/TDB to perform programmatic bulk-loading? As a

I am trying to query my newly created TDB database use the tdbquery program. However, I am having a hard time writing a query that targets the correct named graph. I am doing the following: First a create a new dataset and add a name graph called "facts" Dataset dataset = TDBFactory.createDataset("/tdb/"); dataset.begin(ReadWrite.WRITE) ; try { Model facts = RDFDataMgr.loadModel("lineitem.ttl") ; dataset.addNamedModel("facts", facts); dataset.commit(); TDB.sync(dataset); dataset.end(); } finally { dataset.close(); } When I query all graphs in my TDB database it looks fine. ./tdbquery --loc

I am working on a project which need to save multiple ontologies in one TDB. I tried to do it in my own way, but it didn't work. Help me please..If you know how to use TDB , could you post the code applied to my code? String directory = "./111"; Dataset dataset = TDBFactory.createDataset(directory); Model tdb = dataset.getNamedModel("test1"); String source = "file:///e:/Course.rdf"; System.out.println(tdb.toString()); tdb.commit(); tdb.close(); String source2 = "file:///e:/lyx/resouces/Course1.rdf"; Model tdb2 = dataset.getNamedModel("test2");//see error1 information FileManager.get()

There is a strange behaviour in the connection of the commandline tools of ARQ, TDB and Named Graphs. If importing data via tdbloader in a named graph it can not be queried via GRAPH clause in a SPARQL SELECT query. However, this query is possible when inserting the data in the same graph with SPARQL INSERT. I have following assembler description file tdb.ttl : @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix ja: <http://jena.hpl.hp.com/2005/11/Assembler#> . @prefix tdb: <http://jena.hpl.hp.com/2008/tdb#> . [] ja