Vertical Fragmentation in DDS Step by Step With Easy Example - Lecture 17 - видео

In This Video We Learn Vertical Fragmentation in DDS Step by Step With Easy Example Each site may not need all the attributes of a relation. Thus we use vertical fragmentation which divides a relation vertically by columns. It is a subset of a relation which is created by a subset of columns. A VF of a relation produces fragments R1 R2 . Rn each of which contains subset of attributes of R and PK of R. Objective is to produce smaller relations so that most of the applications run on smaller relat...
Источник видео: RuTube.ru (Обучение)