What Does Data Model Contain?

1.	What Does Data Model Contain?
Answer» Logical DATA Model: Entity, Attributes, Super Type, Sub Type, Primary Key, Alternate Key, Inversion Key Entry, RULE, Relationship, Definition, business rule, etc PHYSICAL Data Model: Table, Column, Primary key Constraint, UNIQUE Constraint or Unique Index, Non Unique Index, Check Constraint, DEFAULT Value, Foreign Key, comment etc.

Answer»

Logical DATA Model: Entity, Attributes, Super Type, Sub Type, Primary Key, Alternate Key, Inversion Key Entry, RULE, Relationship, Definition, business rule, etc
PHYSICAL Data Model: Table, Column, Primary key Constraint, UNIQUE Constraint or Unique Index, Non Unique Index, Check Constraint, DEFAULT Value, Foreign Key, comment etc.

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