[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] vendors , database SQL tuning and 2nd tools for execution plans provided by view-defining queries 2nd view-using queries 2nd 3rd 4th views nested, created by DB2 outer joins to tuning queries with 2nd Visual Explain tool |