Use of Aliases Alternative to centralized scheme:each site prefixes its own site identifier to any name that it generates i.e.,site 17.account. Fulfills having a unique identifier,and avoids problems associated with central control. However,fails to achieve network transparency. Solution:Create a set of aliases for data items;Store the mapping of aliases to the real names at each site. The user can be unaware of the physical location of a data item,and is unaffected if the data item is moved from one site to another. Database System Concepts-6th Edition 19.15 @Silberschatz,Korth and SudarshanDatabase System Concepts - 6 19.15 ©Silberschatz, Korth and Sudarshan th Edition Use of Aliases Alternative to centralized scheme: each site prefixes its own site identifier to any name that it generates i.e., site 17.account. Fulfills having a unique identifier, and avoids problems associated with central control. However, fails to achieve network transparency. Solution: Create a set of aliases for data items; Store the mapping of aliases to the real names at each site. The user can be unaware of the physical location of a data item, and is unaffected if the data item is moved from one site to another