DATA MODEL AND ITS      BUSINESS USE         SURYA PRAKASH             ROLL NO 12
WHAT IS DATA MODEL Data model is a collection of conceptual tools  for describing data, data relationships, data  semanti...
TYPES OF DATA MODELS     A collection of tools for describing       data       data relationships       data semantics...
ENTITY- RELATIONSHIP MODEL The entity- relationship (E-R) data model  uses a collection of basics object called  entity a...
ENTITY-RELATIONSHIP MODELExample of schema in the entity-relationship model
RELATIONAL MODEL The relational model uses a collection of  tables to represent both data and the  relationships among th...
RELATIONAL MODEL                                          Attributes    Example of tabular data in the relational model  ...
SOME IMPORTANT TERMS TABLE –It consists of multiple columns RELATION-Tables are also known as relation TUPLE-In relatio...
OBJECT- BASED DATA MODEL Object- oriented programming (especially in  java, C++, C#) has become the dominant  software de...
SEMI STRUCTURED DATA MODEL The semi structured data model permits the  specification of data where individual data  item ...
Data modal and its business use
Upcoming SlideShare
Loading in …5
×

Data modal and its business use

461 views

Published on

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
461
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
19
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Data modal and its business use

  1. 1. DATA MODEL AND ITS BUSINESS USE SURYA PRAKASH ROLL NO 12
  2. 2. WHAT IS DATA MODEL Data model is a collection of conceptual tools for describing data, data relationships, data semantics, and consistency constraint A data model provides a way to describe the design of a database at the physical, logical, and view levels There are number of different data models are as follow
  3. 3. TYPES OF DATA MODELS  A collection of tools for describing  data  data relationships  data semantics  data constraints  Entity-Relationship model  Relational model  Other models:  object-oriented model  semi-structured data models  Older models: network model and hierarchical modal
  4. 4. ENTITY- RELATIONSHIP MODEL The entity- relationship (E-R) data model uses a collection of basics object called entity and relationship among these object An entity is a thing or object in real world that is distinguishable from other objects The entity- relationship model is widely used in data base design
  5. 5. ENTITY-RELATIONSHIP MODELExample of schema in the entity-relationship model
  6. 6. RELATIONAL MODEL The relational model uses a collection of tables to represent both data and the relationships among those data Each table has multiple columns, and each column has a unique name Tables are also known as relation
  7. 7. RELATIONAL MODEL Attributes  Example of tabular data in the relational model customer- customer- customer- account- Customer- name street city number id 192-83-7465 Ram south Raipur A-101 019-28-3746 Suresh North Jaipur A-215 192-83-7465 Vijay avenue Pune A-201 321-12-3123 John Main Allahabad A-217 019-28-3746 Smith North Warangal A-201
  8. 8. SOME IMPORTANT TERMS TABLE –It consists of multiple columns RELATION-Tables are also known as relation TUPLE-In relational modal tuple is used to refer to a row ATTRIBUTE- It refer to a column of table
  9. 9. OBJECT- BASED DATA MODEL Object- oriented programming (especially in java, C++, C#) has become the dominant software development methodology this led to the development of an object oriented data model that can be seen as extending the E- R model The object relational data model combines features of object oriented data model and relational data model
  10. 10. SEMI STRUCTURED DATA MODEL The semi structured data model permits the specification of data where individual data item of the same type may have different sets of attribute This is in contrast to the data model mentioned earlier, where every data item of a particular type must have the same sets of attribute The Extensible Markup Language(XML)is widely used to represent semi structured data

×