1. A method comprising: obtaining a relational query that references relational data items from a relational data table that lacks an explicit temporal attribute for ordering the relational data items of the relational data table; and adapting the relational data items for processing by a stream engine by associating explicit temporal data with the relational data items, the explicit temporal data comprising different lifetimes.
1. A method comprising: obtaining a relational query that references relational data items from a relational data table that lacks an explicit temporal attribute for ordering the relational data items of the relational data table; and adapting the relational data items for processing by a stream engine by associating explicit temporal data with the relational data items, the explicit temporal data comprising different lifetimes. 2. The method of claim 1 , further comprising: receiving code; and processing the code to derive the relational query.