--TODO: Fill the readme with the information derived from: https://docs.google.com/document/d/1tjkAvIlVXwSw_H83hV7F4hXw6YuVXng7fkwit7Yfaoo/edit#heading=h.sqj179hres8c

Recomanditions for relationship_ids

• "Maps to" is used for 1-to-1 FULL equivalent mapping only
• "Maps to" + "Maps to value" is used for for Observations and Measurements with results
• "Is a" is a temporary relationship used for this check only and applicable for 1-to-1 PARTIAL equivalent AND 1-to-many mappings. Preserve a manual table with 'Is a' relationships, but change 'Is a' to 'Maps to' during the insertion into the concept_relatioship_manual (e.g. using CASE WHEN).

Required fields in a manual table

• icd_code VARHCAR,
• icd_name VARHCAR,
• repl_by_relationship VARCHAR,
• repl_by_id INT,
• repl_by_code VARCHAR,
• repl_by_name VARCHAR,
• repl_by_domain VARCHAR,
• repl_by_vocabulary VARCHAR