DATA MODELS

Which of the following is not a primary data model used in DBMS?

• Relational data model

• Object-Oriented data model

• Hierarchical data model

• Linear data model

In a relational data model, what is a tuple?

• A collection of attributes

• A single data value

• A row in a table

• A column in a table

Which data model is best suited for representing complex, interconnected data with a tree-like structure?

• Hierarchical data model

• Relational data model

• Object-Oriented

• Network data model

Which data model allows records to have multiple parents, creating a more flexible structure than the hierarchical model?

• Relational data model

• Hierarchical data model

• Object-Oriented data model

• Network data model

Which of the following is not a key property of the Relational Data Model?

• Data is organized in tables

• Data is organized hierarchically

• Each column has a unique name

• Relationships between tables are defined by keys

What is a data model in a DBMS?

• A graphical representation of data

• A formal framework for representing data and their relationships

• A physical storage structure for databases

• A programming language for database queries

Which of the following is not a type of data model?

• Relational data model

• Network data model

• Object-oriented data model

• Physical data model

In a relational data model, data is organized into

• Tables

• Documents

• Graphs

• Files

In a hierarchical data model, data is organized in a

• Tree-like structure

• Set of interconnected nodes

• Graph structure

• Table structure

What is the purpose of a conceptual data model?

• To define the physical storage structure of data

• To specify the operations that can be performed on data

• To provide an abstract representation of data and their relationships

• To implement security measures in a database