Method and apparatus for providing schema evolution without recomplation

4,558,413 12/1985 Schmidt et al. ........................ 364/300 4,686,522 8/1987 Hernandez et al. .. ... 340/709 5,058,000 10/1991 Cox et al. ......... ... 364/200 5,280,612 1/1994 Lorie et al. ... ... 395/619 5,347,653 9/1994 Flynn et al. ...... ... 395/619 5,446,880 8/1995 Balgeman et al. ... 707/100 5,495,561 2/1996 Holt .............. ... 395/114 5,504.879 4/1996 Eisenberg et al. ... 395/619 5,511,188 4/1996 Pascucci et al. .. ... 395/619 5,517,670 5/1996 Allen et al. ... ... 395/850 5,526,518 6/1996 Kashio ........................................ 707/3 5.535,386 7/1996 Wang ........ ... 395/619 5,539,918 7/1996 Allen et al. ... ... 395/853 5,548,753 8/1996 Linstead et al. .......................... 707/10 5,559,954 9/1996 Sakoda et al. .......................... 395/164