 	gf_db_id                  INT(10) NOT NULL,
 
 	KEY biological_model_idx (biological_model_id),
-	KEY genomic_feature_idx (gf_acc, gf_db_id)
+	KEY genomic_feature_idx (gf_acc, gf_db_id),
+  UNIQUE KEY unique_biomodels_idx (biological_model_id, gf_acc)
 
 ) COLLATE=utf8_general_ci ENGINE=MyISAM;
 

	allele_db_id              INT(10) NOT NULL,

	KEY biological_model_idx (biological_model_id),
	KEY allele_idx (allele_acc, allele_db_id)

) COLLATE=utf8_general_ci ENGINE=MyISAM;


	strain_db_id              INT(10) NOT NULL,

	KEY biological_model_idx (biological_model_id),
	KEY strain_idx (strain_acc, strain_db_id),
  UNIQUE KEY unique_biomodels_idx (biological_model_id, strain_acc)

) COLLATE=utf8_general_ci ENGINE=MyISAM;

