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Database Design Stages and Relationships

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Database Design Stages and Relationships

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Questions and Answers

What is one of the main stages of database design?

User Interface Design

Data Encryption

Algorithm Development

Data Normalization (correct)

Which of the following is NOT a type of relationship in databases?

Many-to-Many

One-to-Many

One-to-One

One-to-Three (correct)

What is a characteristic of the One-to-Many relationship in databases?

No records in one table can relate to records in another table.

Each record in one table relates to multiple records in another table. (correct)

Each record in the second table relates to multiple records in the first table.

Each record in both tables must relate to one record only.

What role does data normalization play in database design?

<p>It organizes data to minimize redundancy and improve integrity. (C)</p> Signup and view all the answers

What is an appropriate action when designing a relational database?

<p>Establish a clear understanding of data requirements. (A)</p> Signup and view all the answers

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Study Notes

Database Design Stages

Requirement Analysis: Understanding user needs and database purpose.
Conceptual Design: Creating an abstract model, often using an Entity-Relationship (ER) diagram.
Logical Design: Converting the ER model into a structured format, typically a relational schema.
Physical Design: Defining data storage on hardware, including indexing and partitioning.

Database Relationships

One-to-One: A single record in one table relates to a single record in another table.
One-to-Many: A single record in one table relates to multiple records in another table.
Many-to-Many: Multiple records in one table relate to multiple records in another table; often handled using a junction table.

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Description

Explore the essential stages of database design including requirement analysis, conceptual design, logical design, and physical design. Additionally, understand the different types of database relationships such as one-to-one, one-to-many, and many-to-many. This quiz will help solidify your knowledge in structuring databases effectively.