for (KeyColumnUsage usage : info().getKeyColumnUsages()) {
if ( StringUtils.equals(constraint.getConstraintCatalog(), usage.getConstraintCatalog())
&& StringUtils.equals(constraint.getConstraintSchema(), usage.getConstraintSchema())
&& StringUtils.equals(constraint.getConstraintName(), usage.getConstraintName())) {
SchemaDefinition foreignKeySchema = getSchema(constraint.getConstraintSchema());
SchemaDefinition uniqueKeySchema = getSchema(constraint.getUniqueConstraintSchema());
String foreignKey = usage.getConstraintName();
String foreignKeyTable = usage.getTableName();
String foreignKeyColumn = usage.getColumnName();
String uniqueKey = constraint.getUniqueConstraintName();