Introduction to Data Models

INTRODUCTION TO DATA MODELS

In DBMS data models define how the logical structure of a database is modeled.  Data models define how data is connected to each other and how they are processed and stored inside the system.

Some of the most common ones include:
  • Entity-relationship model.
  • Relational model.
  • Network model.
  • Hierarchical database model.
  • Object-oriented database model.
What is use of Data model?
A data model helps to reduce unnecessary columns, by constructing an optimal data structure with the fewest tables and columns. 
It thus helps reduce system complexity and hence reduce cost. One of the most important aspects of any big data project is data modeling.

More topics from DBMS to read:

DATABASE MANAGEMENT SYSTEM

EasyExamNotes.com covered following topics in DBMS.
A list of Video lectures
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JAVA Programs
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Principles of Programming Languages
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Practicals:
Previous years solved papers:
A list of Video lectures References:
  1. Sebesta,”Concept of programming Language”, Pearson Edu 
  2. Louden, “Programming Languages: Principles & Practices” , Cengage Learning 
  3. Tucker, “Programming Languages: Principles and paradigms “, Tata McGraw –Hill. 
  4. E Horowitz, "Programming Languages", 2nd Edition, Addison Wesley

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    Computer Organization and Architecture 

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    1. Structure of desktop computers
    2. Logic gates
    3. Register organization
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    5. Addressing modes
    6. Register transfer language
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    8. Register in Assembly Language Programming
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    References:

    1. William stalling ,“Computer Architecture and Organization” PHI
    2. Morris Mano , “Computer System Organization ”PHI

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    Computer Network

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    References:
    1. Andrew S. Tanenbaum, David J. Wetherall, “Computer Networks” Pearson Education.
    2. Douglas E Comer, “Internetworking with TCP/IP Principles, Protocols, And Architecture",Pearson Education
    3. KavehPahlavan, Prashant Krishnamurthy, “Networking Fundamentals”, Wiley Publication.
    4. Ying-Dar Lin, Ren-Hung Hwang, Fred Baker, “Computer Networks: An Open Source Approach”, McGraw Hill.