US 12,086,190 B2
Metadata propagation method for graph structure data
Kazuhide Aikoh, Santa Clara, CA (US)
Assigned to HITACHI, LTD., Tokyo (JP)
Filed by Hitachi, Ltd., Tokyo (JP)
Filed on Jul. 11, 2022, as Appl. No. 17/862,038.
Prior Publication US 2024/0012858 A1, Jan. 11, 2024
Int. Cl. G06F 16/906 (2019.01); G06F 16/22 (2019.01); G06F 16/25 (2019.01)
CPC G06F 16/906 (2019.01) [G06F 16/2264 (2019.01); G06F 16/254 (2019.01)] 14 Claims
OG exemplary drawing
 
1. A method for determining metadata propagation generated by an Extract, Transfer, Load (ETL) process, the method comprising:
categorizing metadata given to data sources to generalize the metadata and categorizing the ETL process to generalize the ETL process;
defining propagation rules for the generalized metadata and generalized ETL process;
generating metadata for ETL-converted data based on the categorization of the generalized metadata and generalized ETL process, and corresponding ones of the propagation rules;
generating metadata categories for the metadata; and
generating ETL categories based on the metadata of the data sources and ETL flows,
wherein the generating the ETL categories based on the metadata of the data sources and the ETL flows comprises categorizing the ETL flows based on similarity of at least one of an ETL type, an ETL topology, or gap of metadata between input and output of an ETL process.