Dbms models

Intro to DBMS and its Models Name Roll Nos . Babli Kumari 02 D Gokul 11 Shraddha Labde 23 Ravikant Sharma 46 Prabhat Sinha 48

[object Object],[object Object],[object Object],[object Object],[object Object],Basic Definitions

History of DBMS ,[object Object],[object Object],[object Object],[object Object]

File System vs. DBMS ,[object Object],[object Object],[object Object],[object Object],[object Object]

File System vs. DBMS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],DBMS Functionalities

DBMS Architecture Plan Executor Optimizer Operator Evaluator Parser SQL Engine Recovery Manager Lock Manager Tx Manager Files & Access Buffer Manager Disk Space Manager DBMS Catalog Data File Database Web Forms Front-End SQL I/f SQL Commands

People Who Work with Databases ,[object Object],[object Object],[object Object],[object Object]

End Users ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

DBA ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Database Languages ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Applications of DBMS

Advantages of a DBMS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Data Model Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is Data Model ,[object Object],[object Object]

Data Model Basic Building Blocks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Importance of Data Models ,[object Object],[object Object],[object Object],[object Object],[object Object]

Business Rules ,[object Object],[object Object],[object Object]

Categories of data models ,[object Object],[object Object],[object Object]

Degrees of Data Abstraction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The External Model ,[object Object],[object Object],[object Object]

External Model – Advantages ,[object Object],[object Object],[object Object],[object Object]

The Conceptual Model ,[object Object],[object Object],[object Object]

The Conceptual Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Internal Model ,[object Object],[object Object],[object Object],[object Object],[object Object]

The Physical Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Degrees of Data Abstraction - Summary

Hierarchical DB model ,[object Object],[object Object],[object Object],[object Object],[object Object],SALIENT FEATURES

Example PARENT CHILD Emp No. First Name Last Name Dept Num 100 John Dougals 2A 101 Antony Wanton 2B 102 Mary Queen 2C 103 David Moorey 2D Serial No. Type User Emp No. 3009734-4 Computer 100 3-23-283742 Monitor 100 2-22-723423 Monitor 100 232342 Printer 100

Advantages ,[object Object],[object Object],[object Object]

Disadvantages ,[object Object],[object Object],[object Object],[object Object],[object Object]

Network DB model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Network DB model ,[object Object],[object Object],[object Object]

Network DB model ,[object Object],[object Object]

Key terms in network Model ,[object Object],[object Object],[object Object]

Key terms in network Model ,[object Object],[object Object],[object Object],[object Object]

Network Hierarchy ,[object Object],[object Object],[object Object],[object Object]

Applications of Network Model ,[object Object],[object Object]

Applications of Network Model ,[object Object]

Advantages ,[object Object],[object Object]

Disadvantages ,[object Object],[object Object]

Why Study the Relational Model? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Definitions Instance ,[object Object],[object Object]

Definitions What is a schema? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Definitions Cont. Primary Definitions ,[object Object],[object Object],[object Object],[object Object]

Definitions Cont. Primary Definitions ,[object Object],[object Object]

Definitions Cont. Primary Definitions ,[object Object]

Definitions Cont. Primary Definitions ,[object Object],[object Object],[object Object]

Terminology Name Price Category Manufacturer gizmo $19.99 gadgets GizmoWorks Power gizmo $29.99 gadgets GizmoWorks SingleTouch $149.99 photography Canon MultiTouch $203.99 household Hitachi Tuples or rows or records Attribute names Table name or relation name Products:

Relation subject to the following rules ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Relation subject to the following rules ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dbms models

Dbms models

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