公开(公告)号：US10387497B2

公开(公告)日：2019-08-20

申请号：US14742735

申请日：2015-06-18

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Achille B. Fokoue-Nkoutche ,  Gang Hu ,  Anastasios Kementsietsidis ,  Kavitha Srinivas ,  Wen B. Sun ,  Guo Tong Xie

IPC: G06F16/22 ,  G06F16/901 ,  G06F16/28 ,  G06F16/2452

Abstract: Embodiments include methods, systems and computer program products for storing graph data for a directed graph in a relational database. Aspects include creating a plurality of relational tables for the graph data, using a processor on a computer, the plurality of relational tables including adjacency tables and attribute tables. Each row of the attribute tables is dedicated to a subject of the graph data in the dataset and stores a JavaScript Object Notation (JSON) object corresponding to the subject. Each row of the adjacency tables includes a hashtable containing properties and values of the subject for that row.

公开(公告)号：US10452622B2

公开(公告)日：2019-10-22

申请号：US14718174

申请日：2015-05-21

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Gang Hu ,  Jing Mei ,  Wei Jia Shen ,  Wen B. Sun ,  Guo Tong Xie

IPC: G06F16/901 ,  G06F16/21 ,  G06F16/84 ,  G06F16/28

Abstract: A method for automatically generating a semantic mapping for a relational database RDB includes obtaining a first semantic mapping from a first RDB to an ontology of linked data; obtaining a schema mapping from the first RDB to a second RDB; and generating a second semantic mapping from the second RDB to the ontology of the linked data based on the first semantic mapping and the schema mapping.

公开(公告)号：US10445300B2

公开(公告)日：2019-10-15

申请号：US14747092

申请日：2015-06-23

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Gang Hu ,  Jing Mei ,  Wei Jia Shen ,  Wen B. Sun ,  Guo Tong Xie

IPC: G06F16/901 ,  G06F16/21 ,  G06F16/84 ,  G06F16/28

Abstract: A method for automatically generating a semantic mapping for a relational database RDB includes obtaining a first semantic mapping from a first RDB to an ontology of linked data; obtaining a schema mapping from the first RDB to a second RDB; and generating a second semantic mapping from the second RDB to the ontology of the linked data based on the first semantic mapping and the schema mapping.

公开(公告)号：US10387496B2

公开(公告)日：2019-08-20

申请号：US14718147

申请日：2015-05-21

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Achille B. Fokoue-Nkoutche ,  Gang Hu ,  Anastasios Kementsietsidis ,  Kavitha Srinivas ,  Wen B. Sun ,  Guo Tong Xie

IPC: G06F16/22 ,  G06F16/901 ,  G06F16/28 ,  G06F16/2452

Abstract: Embodiments include methods, systems and computer program products for storing graph data for a directed graph in a relational database. Aspects include creating a plurality of relational tables for the graph data, using a processor on a computer, the plurality of relational tables including adjacency tables and attribute tables. Each row of the attribute tables is dedicated to a subject of the graph data in the dataset and stores a JavaScript Object Notation (JSON) object corresponding to the subject. Each row of the adjacency tables includes a hashtable containing properties and values of the subject for that row.