 
 @column structural_variation_id	Primary key, internal identifier.
 @column variation_name					The external identifier or name of the variation. e.g. "esv9549".
+@column alias                   Other structural variation name.
 @column source_id								Foreign key references to the @link source table.
 @column study_id								Foreign key references to the @link study table.	
 @column class_attrib_id					Foreign key references to the @link attrib table. Defines the type of structural variant.<br /> 
                                 The list of structural variation classes is available <a href="data_description.html#classes">here</a>.
+@column clinical_significance_attrib_id  Foreign key references to the @link attrib, identifying the clinical significance of this variant, as reported by DGVa.<br /> 
+                                         The list of clinical significances is available <a href="data_description.html#clin_significance">here</a>.
 @column validation_status				Validation status of the variant.
 @column is_evidence             Flag indicating if the structural variation is a supporting evidence (1) or not (0).
 @column somatic                 Flags whether this structural variation is known to be somatic or not

	KEY pos_idx( seq_region_id, seq_region_start, seq_region_end ),
	KEY structural_variation_idx (structural_variation_id),
	KEY source_idx (source_id),
	KEY attrib_idx (class_attrib_id),
	KEY variation_set_idx (variation_set_id)
);




@column variation_set_id		             The structural variation feature can belong to a @link variation_set.
@column somatic                          Flags whether this structural variation is known to be somatic or not
@column breakpoint_order                 Defines the order of the breakpoints when several events/mutation occured for a structural variation (e.g. somatic mutations)
@column length                           Length of the structural variant. Used for the variants with a class "insertion", when the size of the insertion is known.

@see structural_variation
@see source
@see study
@see seq_region
@see attrib
@see variation_set
