BIS06 Physical Database Models

Business Information Systems Physical Data Modeling

Mapping Logical to Physical Model ,[object Object],Comment Definition Foreign Key Relationship Check Rule, Default Value Rule Non Unique Index Inversion Key Unique Key or Unique Constraint Alternate Key Primary Key Constraint Primary Key Column Attribute Table Entity Represents the physical implementation of the model in a database. Represents business information and defines business rules Physical Data Model Logical Data Model

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

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

Overview of objects ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Constructs for “constraints” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Constructs for “better” access ,[object Object],[object Object],[object Object],[object Object],[object Object]

Constructs for ‘automatic’ processing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Raw Data on Employees ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

DEPARTMENT Table ,[object Object],[object Object],[object Object],[object Object]

DDL : Creating Tables ,[object Object],[object Object],[object Object],[object Object],An Oracle database consists of DDL commands, which are useful to create, modify and drop the database objects. In this section, we will try to explain about important database CREATE commands that are used by a data modeller by relating it with our example data.

The Main Table ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

More Automation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Altering Tables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Implementing Constraints ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Structured Query Language ,[object Object],[object Object],[object Object],[object Object],SQL

BIS06 Physical Database Models

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BIS06 Physical Database Models