Graph Based Data Model

DESIGN OF GUI FOR GRAPH BASED DATA MODEL

TYPES OF DATA MODELS  Relational

model .  Network model.  Hierarchial model.  Object –oriented model.  Object-relational model.  Graph based data model.

Deficiencies of Relational Data Model Non-hierarchial. No

support for user defined data-types Expensive join operations. Semantic integrity constraints are enforced externally.

Characteristics of Advanced Data Models  Modular

structure.  Encapsulation.  Inheritance.  Ease of query processing.  Maintenance.

Graph based data model  Entire

database in viewed as graph.  Vertices represent occurrence of each entity as well as some high level abstraction of these occurrences.  Edges represent relationship among entities.

Graph based data model

Objective of the project To provide a graphical user interface for automation of the graph based data model.

Scope of the Work  Design

the GUI providing the user with the interface for implementation of the graph based data model.

 To

implement the data structure of the data model for effective storing of data.

Design of GUI Here the graph model contains: PSG:-each

node represented by a “circle”.  SSG:-few PSGS aggregated to form higher level nodes and represented by “rectangle”.  Determinant.  Edges

An Implementation

Implementation of Toolbox

Tool Functions  PSG

:-To represent the data elements.  SSG :-To represent the entities.  Edge :-To represent the relationship.  Clear :- Clears the screen.  Upgrade Level :- To represent the next level of hierarchy.

PSG Formation

SSG Formation

Future Work  Upgrade

level -To provide the facility so that the SSGs’ can be created at various levels giving an object oriented approach to the whole design.

 Linking

with database -To provide the logical framework for storing the entities in the database.

References PETER NORTON’S GUIDE TO VISUAL BASIC 4 FOR WINDOWS 95  VISUAL BASIC BY V.K JAIN  dbms2.com  Visualbasic.ittoolbox.com 

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