text: -- *********************************************************************
  -- DDL for the Apicurio Registry - Database: H2
  -- Upgrades the DB schema from version 3 to version 4.
  -- *********************************************************************
  
  UPDATE apicurio SET prop_value = 4 WHERE prop_name = 'db_version';
  
  CREATE TABLE downloads (tenantId VARCHAR(128) NOT NULL, downloadId VARCHAR(128) NOT NULL, expires BIGINT NOT NULL, context VARCHAR(1024));
  ALTER TABLE downloads ADD PRIMARY KEY (tenantId, downloadId);
  CREATE HASH INDEX IDX_down_1 ON downloads(expires);
  
  ALTER TABLE acls ADD COLUMN principalName VARCHAR(256);
  