Summary of Psychological Theories of Personality and Emotion

Psychological Theories of Personality and Emotion

Summary Knowledge test FlashcardsPodcastMindmap

Introduction

Software development is the process of conceiving, designing, implementing, testing, and maintaining software applications that solve real-world problems. This material offers a practical and structured guide for a self-taught student who wants to understand the key concepts, practices, and most relevant tools for creating quality software.

Definition: Software development is the set of technical and organizational activities aimed at producing and maintaining software programs and systems that satisfy functional and non-functional requirements.

1. Software Development Life Cycle (SDLC)

Breaking down the process helps to understand responsibilities and deliverables at each stage.

Main Phases

Requirements: gathering and documenting what the system must do.
Design: architecture and detailed component design.
Implementation: writing code and performing integrations.
Testing: verifying functionality, performance, and security.
Deployment: putting the system into production.
Maintenance: fixing bugs and evolving the product.

Definition: A requirement is a documented expectation about a system's behavior or constraints.

Comparison Table: Waterfall vs. Iterative Model

Aspect	Waterfall	Iterative/Agile
Flow	Linear and sequential	Incremental and adaptive
Changes	Difficult to incorporate	Adaptable between iterations
Deliveries	At the end of the project	Frequent deliveries
Risk	High if requirements change	Reduced risk due to feedback

💡 Did you know?Fun fact: Did you know that many teams combine approaches, using elements of both the Waterfall and Agile models for large projects that require rigorous documentation and incremental deliveries?

2. Key Roles in a Development Team

Product Owner: defines priorities and scope.
Scrum Master: facilitates processes and removes impediments.
Developer: implements features.
QA/Tester: ensures quality through testing.
DevOps Engineer: automates deployments and operations.

Definition: DevOps is a practice that integrates development and operations to accelerate deliveries through automation and collaboration.

3. Best Practices in Design and Architecture

SOLID Principles (summarized)

S: Single Responsibility — a class should have only one reason to change.
O: Open/Closed — open for extension, closed for modification.
L: Liskov Substitution — derived objects should be substitutable for their base objects.
I: Interface Segregation — small, specific interfaces.
D: Dependency Inversion — depend on abstractions, not concretions.

Practical Example: If you have a class that manages users and sends emails, separate responsibilities into two classes: user management and email service.

Table: Comparison of Architectural Styles

Style	Advantages	Disadvantages
Monolith	Initial simplicity, easy deployment	Limited scalability in large projects
Microservices	Scalability, independent deployment	Operational complexity, latency between services

💡 Did you know?Did you know that large-scale digital companies migrated to microservices to scale teams and deployments, even though it required investment in automation and observability?

4. Version Control

Use Git to manage code changes.
Common workflows: trunk-based, Git Flow, GitHub Flow.

Best practices:

Small, meaningful commits.
Clear and consistent messages.
Code reviews (code review) before merging changes.

Definition: A pull request is a request to review and merge changes from one branch to another, facilitating code review and discussion.

5. Software Testing

Main Types:

Unit Tests: test isolated units of code.
Integration Tests: test interaction between components.
End-to-End Tests: test the system from the user's perspective.
Regression Tests: ensure that changes don't break existing functionality.

FlashcardsKnowledge testSummaryPodcastMindmap

Start for free

Already have an account? Sign in

Essential Software Development

Klíčové pojmy: Understand the phases of the SDLC and their deliverables, Prioritize requirements with the Product Owner, Apply SOLID principles to maintain flexible code, Use version control with small commits and reviews, Implement unit, integration, and end-to-end tests, Automate CI/CD and use IaC for reproducibility, Monitor production with logs, metrics, and traces, Integrate security from the start of the project, Choose architecture (monolith vs. microservices) based on scalability and complexity, Manage secrets and vulnerable dependencies, Use agile methodologies for incremental delivery, Perform deployments to staging environments before production

## Introduction **Software development** is the process of conceiving, designing, implementing, testing, and maintaining software applications that solve real-world problems. This material offers a practical and structured guide for a self-taught student who wants to understand the key concepts, practices, and most relevant tools for creating quality software. > Definition: Software development is the set of technical and organizational activities aimed at producing and maintaining software programs and systems that satisfy functional and non-functional requirements. ## 1. Software Development Life Cycle (SDLC) Breaking down the process helps to understand responsibilities and deliverables at each stage. ### Main Phases 1. **Requirements**: gathering and documenting what the system must do. 2. **Design**: architecture and detailed component design. 3. **Implementation**: writing code and performing integrations. 4. **Testing**: verifying functionality, performance, and security. 5. **Deployment**: putting the system into production. 6. **Maintenance**: fixing bugs and evolving the product. > Definition: A requirement is a documented expectation about a system's behavior or constraints. Comparison Table: Waterfall vs. Iterative Model | Aspect | Waterfall | Iterative/Agile | |---|---:|---:| | Flow | Linear and sequential | Incremental and adaptive | | Changes | Difficult to incorporate | Adaptable between iterations | | Deliveries | At the end of the project | Frequent deliveries | | Risk | High if requirements change | Reduced risk due to feedback | Fun fact: Did you know that many teams combine approaches, using elements of both the Waterfall and Agile models for large projects that require rigorous documentation and incremental deliveries? ## 2. Key Roles in a Development Team - **Product Owner**: defines priorities and scope. - **Scrum Master**: facilitates processes and removes impediments. - **Developer**: implements features. - **QA/Tester**: ensures quality through testing. - **DevOps Engineer**: automates deployments and operations. > Definition: DevOps is a practice that integrates development and operations to accelerate deliveries through automation and collaboration. ## 3. Best Practices in Design and Architecture ### SOLID Principles (summarized) - **S**: Single Responsibility — a class should have only one reason to change. - **O**: Open/Closed — open for extension, closed for modification. - **L**: Liskov Substitution — derived objects should be substitutable for their base objects. - **I**: Interface Segregation — small, specific interfaces. - **D**: Dependency Inversion — depend on abstractions, not concretions. Practical Example: If you have a class that manages users and sends emails, separate responsibilities into two classes: user management and email service. Table: Comparison of Architectural Styles | Style | Advantages | Disadvantages | |---|---:|---:| | Monolith | Initial simplicity, easy deployment | Limited scalability in large projects | | Microservices | Scalability, independent deployment | Operational complexity, latency between services | Did you know that large-scale digital companies migrated to microservices to scale teams and deployments, even though it required investment in automation and observability? ## 4. Version Control - Use **Git** to manage code changes. - Common workflows: trunk-based, Git Flow, GitHub Flow. Best practices: - Small, meaningful commits. - Clear and consistent messages. - Code reviews (code review) before merging changes. > Definition: A pull request is a request to review and merge changes from one branch to another, facilitating code review and discussion. ## 5. Software Testing Main Types: - **Unit Tests**: test isolated units of code. - **Integration Tests**: test interaction between components. - **End-to-End Tests**: test the system from the user's perspective. - **Regression Tests**: ensure that changes don't break existing functionality. Ex