DATA EXTRACTION SYSTEM

The present invention relates to data management. In order to extract data from one or more tabular data files effectively and reliably, a data extraction system is provided for extracting data from one or more tabular data files. The system comprises a user interface adapted for facilitating one or more users to submit one or more tabular data files, each tabular data file comprising at least one table. According to a first alternative, the user interface is configured to receive a user-defined template comprising at least one target table. The data extraction system further comprises a data extraction module or a validator. The data extraction module comprises a schema-level matcher and an instance-level matcher. The schema-level matcher is configured to identify target schema-level information of the at least one target table, and to select at least one semantically matched candidate table from the submitted one or more tabular data files based on the target schema-level information. The instance-level mat