advance dbms lecture1

8/7/2019 Advance DBMS Lecture1

1/33

CPSC 608: L#1 1 Copyright 1999 Hoh In

Lecture #1: Course Introduction

CPSC 608: Advanced Database Systems

January 18, 1999

Hoh In

Texas A&M University


2/33


The Goals of Today

Understand why do I need to take this Course

Decide whether I have to continue or drop by

estimating course loading


3/33


Contents

Prologue: CI-DBMS vs DI-DBMS

The Theme of this Course

Overview of the Course Structure

Epilogue and Feedback


4/33


Prologue: CI-DBMS vs. DI-DBMS

What is different?

File system vs. Database

DB vs. DBMS

Central Integrated DBMS vs. Distributed Integrated

DBMS


5/33


File Processing vs. Database Processing


6/33


CI-DBMS vs. DI-DBMS


7/33


Example: An Engineering Firm


8/33


What are the issues?

Layers of Transparency


9/33


10/33


Network Transparency

Called distribution transparency

Feel no difference between CI-DBMS and DI-DBMS

Hiding the operational details of the network

Two types:

Location transparency

Naming transparency


11/33


Replication Transparency

Data Replication

Benefits: Performance (increase the locality of reference)

Availability and Reliability (tolerance of single failure)

Problems: Integrity among duplicated data

Issues:

The number of copies of database object

Distribution of duplicated data

Replication Transparency

Hiding the operational details of duplicated data


12/33


Fragmentation Transparency

Break each database relation down into smaller

fragments For performance, availability, reliability

Two types:

Horizontal fragmentation: divide the tuples (rows) Vertical fragmentation: divide the attributes (columns)

Hiding the operational details of fragmentation

Support a global query Inside the system, it will be translated into several fragment

queries


13/33


Transparency Issues

Who should provide what transparency?

How do existing systems fare?


14/33


Other Issues?

Reliability

Through Distributed Transactions Performance

System Expandability

Complexity

Cost

Distributed of Control

Security


15/33


Contents

Prologue: Components vs. Lego Blocks


Overview of the Course Structure



16/33



How to develop

the best .

distributed

Database?


17/33


Why Database?

An integrated collection of data elements derived

from an application e.g., the data associated with a banking application or

an airline reservation system

DBMS: a software interface between the user and thedatabase

Allows designers to structure their information

Allows users to query and modify that information

Helps manage very large amounts of data and many concurrentoperations on the data


18/33

CPSC 608: L#1 Copyright 1999 Hoh In

Why Distributed?

Distributed Hardware needs Distributed Software !

Shipping/Receiving Inventory

Engineering

Manufacturing

Accounting

Payables/Receivables

Sales

Source: OMG Documentation


19/33

CPSC 608: L#1 Copyright 1999 Hoh In

Future Networks



20/33


There willnot

be consensus on hardware platforms; There will notbe consensus on operating systems;

There will notbe consensus on network protocols;

There will notbe consensus on application formats.

There mustbe consensuson interoperability.

Focus on Interoperability



21/33


How to define The Best?

Stakeholder-sensitive

Domain-sensitive Real-time systems vs. Human-life critical systems

Situation- or Environment-sensitive

Evolution-sensitive

Now vs Future


22/33


Stakeholder Concern

Customer

Schedule & Budget estimation Feasibility & Risk assessment

User Consistency with requirements and usagescenarios

Architecture and

System Engineer

Requirements traceability Support of tradeoff analysis Completeness, consistency of architecture

Developer Sufficient details for design Reference on selecting/assembling components

Maintainer Guidance of s/w modification andarchitecture evolution


23/33


How to Develop?

Distributed Database Design

Distributed Query Processing

Distributed Directory Management

Distributed Concurrency Control

Distributed Deadlock Management

Reliability of Distributed DBMS

Operating System Support Heterogeneous Databases


24/33


Contents

Prologue: CI-DBMS vs. DI-DBMS


Overview of the Course Structure Part I: Technology Review

Part II: Distributed Database Systems Part III: Group Projects

Homework Assignments

Class Project and Exam

BBS and Lab Days



25/33


26/33


Part II: Distributed Database Systems (DDS)

DDS Architecture (Chapter 4)

DDS Design (Chapter 5)

Semantic Data Control (Chapter 6)

Query Processing:Decomposition,

Localization, Optimization (Chapter 7, 8)

Transaction Management (Chapter 10)

Database Interoperability (Chapter 15)


27/33


Part III: Group Projects

Class Project

Integrated, Exchangeable, Extendable, Shared Information Mediator

(IEESIM)

Integrated views (information fusion) from different information

Benefits: transparency; verification and validation of information

Support of Exchangeable Data Format Flexibility (e.g., XML)

Easy to extend to third-party tools without significant interface work Using Shared Database among individual tools

Collecting information from various information sources (e.g., application,

web sites)

[Team] Application development and its documentation (300 points)

[Individual] Critiques OR Research Term paper (100 points) Write your critiques for improving your software development process

Develop a research idea and write a paper


28/33


Homework Assignments

Total 300 points

TBD, but MS Access

Oracle

Normalization of RDB Reading assignment

Pop-Quiz: verification of your reading


29/33


Exams Midterm I -- Test for Part I (150 points)

To test your understanding technology review so that you areready to apply this knowledge to build up your distributed database

systems

Midterm II -- Test for Part II (150 points)

To test your understanding technology review so that

you are ready to apply this knowledge to build up your

distributed database systems


30/33


BBS and Lab Days BBS (Bulletin Board System) is available

For What? To communicate efficiently between me and you

Ask questions through the BBS so that I dont need to repeat to answer

the similar questions

Post your opinions and suggestions for class improvement

To communicate efficiently among all of you You can also answer the questions your colleagues ask. Note that I am

not the only person who I have to answer. I will count on the persons as

an eager participator (which means an opportunity to get extra bonus)

Lab Days will be determined if necessary

Potential times: after 7pm (1 or 2 hours)

For What: WinWin, CORBA, DCOM, JavaBeans, MS Access, Oracles


31/33


Grading Ranges

1000

AB


32/33


33/33



I want my class to be:

Dynamic/Reflective Productive

Useful (in your future career)

Efficient and Effective What do you earn through this class?

advance dbms lecture1

Documents