Database querying using natural language processing

A computer program product, comprising:

• a processor set;
• one or more computer-readable storage media;
• and
• program instructions stored on the one or more computer-readable storage media to cause the processor set to perform operations comprising:
• receiving a database schema identifying a set of characteristics of a target database;
• determining, based on the database schema, a group of database concepts for the target database;
• generating a set of natural language statements relating to the group of database concepts;
• generating a set of structured language statements corresponding to the set of natural language statements;
• executing the set of structured language statements;
• filtering the set of structured language statements based on a set of results of executing the set of structured language statements;
• updating the set of natural language statements based on filtering the set of structured language statements;
• and
• outputting a dataset identifying a result of updating the set of natural language statements and filtering the set of structured language statements.

A system, comprising:

• one or more memories;
• and
• one or more processors, coupled to the one or more memories, configured to:
• receive a database schema identifying a set of characteristics of a target database;
• determine, based on the database schema, a group of database concept sets for the target database,
• wherein each database concept set, of the group of database concept sets, includes a primary concept and a set of secondary concepts relating to the primary concept;
• generate a group of first query parts relating to the group of database concept sets;
• generate a group of second query parts corresponding to the group of first query parts,
• wherein the group of first query parts includes one or more natural language query parts and wherein the group of second query parts includes one or more corresponding query language query parts;
• and
• output a dataset identifying the group of first query parts and the group of second query parts corresponding to the group of first query parts.