Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] Abbey, Edward ACID properties aggregate operators 2nd versus "summaries" Aristotle arity assignment tuple Assignment Principle, The 2nd 3rd SQL violations associativity atomicity scalar value 2nd transaction attribute attribute-name:type-name pair 2nd extracting value from tuple multi-valued pictured as column relation relvar tuple attribute constraint attribute ordering (left to right) in SQL tables not in relations 2nd axiom (database) |