Analysis of SQL Null Missing-value Semantics
The groundbreaking work of T. Imielinski and W. Lipski (1984) provided a framework in which to evaluate the intended semantics of various proposals to implement missing-value semantics. This section roughly follows chapter 19 the "Alice" textbook. A similar presentation appears in the review of Ron van der Meyden, ยง10.4.
Read more about this topic: Null (SQL)
Famous quotes containing the words analysis and/or null:
“Analysis as an instrument of enlightenment and civilization is good, in so far as it shatters absurd convictions, acts as a solvent upon natural prejudices, and undermines authority; good, in other words, in that it sets free, refines, humanizes, makes slaves ripe for freedom. But it is bad, very bad, in so far as it stands in the way of action, cannot shape the vital forces, maims life at its roots. Analysis can be a very unappetizing affair, as much so as death.”
—Thomas Mann (1875–1955)
“A strong person makes the law and custom null before his own will.”
—Ralph Waldo Emerson (1803–1882)