IB Computer Science Topic A3.4.1 Different Types of Databases as Approaches to Storing Data Revision Notes (HL)

IB Computer Science Topic A3.4.1 Different Types of Databases as Approaches to Storing Data Revision Notes (HL) | RevisionDojo

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NoSQL Databases

NoSQL databases are designed to handle unstructured and semi-structured data, offering flexibility and scalability that traditional relational databases may lack.

Note

NoSQL stands for "Not Only SQL", highlighting its ability to support diverse data models beyond traditional relational structures.

Key Features of NoSQL Databases

Flexible Schemas: Unlike relational databases, NoSQL databases allow for dynamic schemas, enabling easy adaptation to changing data requirements.
Scalability: NoSQL databases are designed to scale horizontally, making them ideal for large-scale applications with high user loads.
Data Models: NoSQL databases use various data models, including:
1. Document Stores: Data is stored in JSON-like documents (e.g., MongoDB).
2. Key-Value Stores: Data is stored as key-value pairs (e.g., Redis).
3. Column-Family Stores: Data is organized into columns (e.g., Cassandra).
4. Graph Databases: Data is represented as nodes and edges (e.g., Neo4j).

Example

Consider an e-commerce platform using a NoSQL database to store product information.
Each product is a document containing all relevant details, such as name, price, reviews, and inventory.
This structure allows for quick retrieval and easy updates without complex joins.

Cloud Databases

Cloud databases are hosted on remote servers, providing scalability, accessibility, and managed services.

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Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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NoSQL Databases

NoSQL databases are designed to handle unstructured and semi-structured data, offering flexibility and scalability that traditional relational databases may lack.

Note

NoSQL stands for "Not Only SQL", highlighting its ability to support diverse data models beyond traditional relational structures.

Key Features of NoSQL Databases

Flexible Schemas: Unlike relational databases, NoSQL databases allow for dynamic schemas, enabling easy adaptation to changing data requirements.
Scalability: NoSQL databases are designed to scale horizontally, making them ideal for large-scale applications with high user loads.
Data Models: NoSQL databases use various data models, including:
1. Document Stores: Data is stored in JSON-like documents (e.g., MongoDB).
2. Key-Value Stores: Data is stored as key-value pairs (e.g., Redis).
3. Column-Family Stores: Data is organized into columns (e.g., Cassandra).
4. Graph Databases: Data is represented as nodes and edges (e.g., Neo4j).

Example

Consider an e-commerce platform using a NoSQL database to store product information.
Each product is a document containing all relevant details, such as name, price, reviews, and inventory.
This structure allows for quick retrieval and easy updates without complex joins.

Cloud Databases

Cloud databases are hosted on remote servers, providing scalability, accessibility, and managed services.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A1 Computer fundamentals4 subtopics

A2 Networks4 subtopics

A3 Databases4 subtopics

A4 Machine learning4 subtopics

B1 Computational thinking1 subtopic

B2 Programming5 subtopics

B3 Object-oriented programming2 subtopics

B4 Abstract data types (HL only)1 subtopic

IB Computer Science Topic A3.4.1: Different Types of Databases as Approaches to Storing Data Notes

NoSQL Databases

Key Features of NoSQL Databases

Cloud Databases

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

NoSQL Databases

Key Features of NoSQL Databases

Cloud Databases

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

A1 Computer fundamentals4 subtopics

A2 Networks4 subtopics

A3 Databases4 subtopics

A4 Machine learning4 subtopics

B1 Computational thinking1 subtopic

B2 Programming5 subtopics

B3 Object-oriented programming2 subtopics

B4 Abstract data types (HL only)1 subtopic