public static String buildDbKeyWithDelimiterSuffix(String catName, String dbName) {
    return buildKey(catName.toLowerCase(), dbName.toLowerCase()) + delimit;
  }
Constant variable that stores engine value needed to store / access
Hive column statistics.
TODO: Once CachedStore supports multiple engines, this constant variable
can be removed.
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/cache/CacheUtils.java