| Author | Wattanapong Veerakul |
| Call Number | AIT Thesis no.TC-02-13 |
| Subject(s) | Databases
Distributed databases
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. TC-02-13 |
| Abstract | In current proposed database architectures they have two types of database
architecture, centralized database architecture (CDB) and distributed database
architecture (DDB).
When we compare between CDB and DDB, the DDB reduces the distance
traveled by signaling message. However, this scheme increases the number of database
updates and queries and thus increases the delay in location registration and call delivery.
So in this thesis presents on-going research efforts that attempt to reach some
middle ground between centralized database architecture and distributed database
architecture, hybrid database architecture (HDB).
We present analytic model which allows us to evaluate different alternative of
query loads and average search time and also study querying cost. Moreover, we discuss
simulation to compare results with analytic model.
In designing the HDB or any database structure, the performance is obtained by
reach of the best trade off between average search time and query cost of database
structure. For average search time of HDB the best structure is 3 levels structure with
small number of home nodes while the number of home nodes depends on mobility of
user. For query cost of HDB it depends on the number of HNs and levels. In the case of
comparison among CDB, DDB, and HDB, HDB has the best performance in low mobility
and CDB has the best performance in high mobility. |
| Year | 2002 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. TC-02-13 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Teerapat Sanguankotchakom; |
| Examination Committee(s) | Ahmed, Kazi M. ;Erke, Tapio ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2002 |
