Database Data Models

What is data model?

• Simple representations of complex real-world data structures

• Iterative and progressive process of creating a specific data model for a determined problem domain

• Abstraction of a real-world object or event

Which are the basic building block(s) for data model?

Hint: Please tick more than one answer

• Entity

• Relationship

• Constraint

• Cardinality

The picture above is example of

• Network Model

• Hierarchical Model

• Object Oriented Model

• No SQL

In Relational Model, tuple represents as

• rows

• columns

_______________________uses graphic representations to model database components.

Which is the most popular data model in DBMS?

• Object-Oriented

• Object-Based

• Relational

• Network

A row in a database.

• Record
• Field
• Entity
• Table

A column in a database.

• Field
• Record
• Entity
• Validation

What language does the Relational Model use?

• Java
• Python
• SQL
• C++

Below are the reasons why the data model is important EXCEPT

• Are a communication tool

• Give an overall view of the database

• Organize data for •various users

• Are an abstraction for the creation of bad database