Physical Database Design

358 CHAPTER 16 Distributed Data Allocation

professor of computer science at University of California–Los Angeles. When distrib-

uted database systems came to prominence in the 1980s, file allocation gave way to

database (table) allocation. Other issues, such as system compatibility and integrity,

however, became more important, and the database allocation problem is now just one

of many problems that need to be resolved in such systems.

In this chapter we first look at the current technology in heterogeneous distributed

(federated) databases and then examine the key database design issue—table allocation

methods, particularly for replicated data.

16.1

Introduction

Information management has many new challenges today that are caused by the multi-

plicity ...