Explicit --- You can use explicit quotas to specify a quota for a specific quota target or to override a default quota for a specific target. Derived -- A quota enforced as a result of a default quota...Explicit --- You can use explicit quotas to specify a quota for a specific quota target or to override a default quota for a specific target. Derived -- A quota enforced as a result of a default quota, rather than an explicit quota (a quota with a specific target), is referred to as a derived quota. Adding a quota for a quota target for which a default quota or a default tracking quota exists.