公开(公告)号：US20170032052A1

公开(公告)日：2017-02-02

申请号：US14812819

申请日：2015-07-29

Applicant: Oracle International Corporation

Inventor： RAGHAVAN RAMAN ,  SUNGPACK HONG ,  HASSAN CHAFI

IPC: G06F17/30

CPC classification number: G06F16/9024

Abstract: A graph processing system that supports automatic data model conversion from Resource Framework Description (RDF) to Property Graph (PG) is provided. Rather than using a naive conversion approach that creates PG nodes and edges without properties, a set of conversion rules is evaluated to automatically convert RDF triples into PG nodes and edges with properties, as appropriate. Accordingly, the converted PG data takes full advantage of the PG format while advantageously avoiding the creation of extraneous nodes and edges, allowing queries on the PG data to be efficiently executed on any database supporting the PG data model. The plurality of rules categorize each triple into three different cases depending on whether or not the predicate is “rdf:type” and whether or not the object is a literal value, generating graph entities as appropriate for each case. Optionally, user defined rules may override the automatic rules.

Abstract translation: 提供了支持从资源框架描述（RDF）到属性图（PG）的自动数据模型转换的图形处理系统。 而不是使用创建没有属性的PG节点和边缘的天真的转换方法，而是根据需要评估一组转换规则，以便将RDF三元组自动转换为具有属性的PG节点和边。 因此，转换的PG数据充分利用PG格式，同时有利地避免了外部节点和边缘的创建，允许在支持PG数据模型的任何数据库上有效地执行对PG数据的查询。 多个规则根据谓词是否为“rdf：type”，以及对象是否是文字值，将每个三元组分为三种不同的情况，根据情况生成图形实体。 可选地，用户定义的规则可以覆盖自动规则。