Copying or distributing in print or electronic forms without written permission of
Idea Group Inc. is prohibited.
the replaced category are related to the new categories. In particular, the product with
code ???X1??? is related to the AdultClothes category, while the product with code ???X2???
is related to the KidClothes category. This means that the valid time intervals between
the Clothes category and the considered products changes from [01/01/05,now] to
[01/01/05, 31/05/05], and new edges between the new categories and the products
are added. The new edges have valid time interval equal to [01/06/05,now].
Figure 5. Replacing a category
$10
X1
$20
X2
$25
$50
Y1
Temporal Semistructured Data Models and Data Warehouses 2
Copyright ?© 2007, Idea Group Inc.
Pages:
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534