Temporal queries involving business time are also easy to write-and you need only include FOR BUSINESS_TIME in the FROM clause.

You can enable versioning of the temporal table by using the ALTER table command with the ADD versioning clause and specifying the history table name in the use history table clause (see Listing 3).

DB2 automatically rewrites the queries with appropriate WHERE clause predicates depending on the data types used in the start and end columns of the temporal tables.