Data Modeling Quiz

What is the purpose of data modeling?

• To represent data used by a business system

• To manage software development

• To design user interfaces

• To create complex algorithms

What does an Entity Relationship Diagram (ERD) depict?

• The data model

• The physical storage of data

• The user interface design

• The programming logic

What is normalization in data modeling?

• A technique for data encryption

• A way to visualize data flow

• A process to validate data models

• A method to create user interfaces

What does a logical data model show?

• The physical layout of databases

• The organization of data without storage details

• How data is stored

• The programming logic of data handling

What is an attribute in the context of data modeling?

• A type of data storage

• A method of data retrieval

• Information captured about an entity

• A relationship between entities

What does cardinality refer to in data modeling?

• The number of instances in one entity related to another

• The type of data stored

• The number of attributes in an entity

• The complexity of the data model

What is a foreign key?

• A method of data encryption

• A unique identifier for a database

• An identifier for a child entity

• A primary key in a parent entity

What is the first step in creating an ERD?

• Draw the relationships

• Identify the entities

• Add attributes to entities

• Validate the ERD

What does modality refer to in data modeling?

• The complexity of the data model

• The number of attributes in an entity

• The type of relationships between entities

• Whether an instance of a child entity can exist without a parent

What is an intersection entity used for?

• To resolve M:N relationships

• To store information about one entity

• To create new attributes

• To visualize data flow