Software Development - Software Design Flashcards
What is Software development?
he process of building software, starting with the original idea and ending with a high-quality working product. This process is also known as the software development life cycle (SDLC)
What are the phases of the SDLC
Requirements & Analysis Design Implementation Testing Deployment Maintenance
Describe the first phase of the SDLC
Requirements and analysis - the product owner and qualified team members gather the requirements for the software to be built
Describe the second phase of the SDLC
Design - the software architects and developers design the software based on the provided SRS
Describe the implementation phase of the SDLC
the developers take the design documentation and develop the code according to that design
Describe the testing phase
test engineers take the code and install it into the testing environment so they can follow the test plan.
Describe the Deployment phase
the software is installed into the production environment
Describe the Maintenance phase
Provides support for customers
Fixes bugs found in production
Works on software improvements
Gathers new requests from the customer
What are the three common software methodologies?
Waterfall
Agile
Lean
Describe Waterfall Software development
the process goes in one direction, and can never go backward
Describe Agile software development
What does the command pip freeze do?
Shows the available packages and their version
What command allows you to create a virtual env in python
python -m venv [name of venv]
Why should you make a venv whenever you want to install any packages?
Sometime there are dependicies that may interfere with other packages
what command deactivates a venv?
deactivate
What does a requirements.txt file do
Shows all of the packages that are needed for that specific venv to work
what does the command pip install -r requirements .txt do?
installs all of the packages of that particular venv
Describe creational patterns
used to guide, simplify, and abstract software object creation at scale
Describe structural patterns
Patterns describing reliable ways of using objects and classes for different kinds of software projects.
Describe behavioral patterns
Patterns detailing how objects can communicate and work together to meet familiar challenges in software engineering.
Describe observer pattern
a subscription notification design that lets objects (observers or subscribers) receive events when there are changes to an object (subject or publisher) they are observing
What are the three things needed for an observer pattern to work
The subject must have the ability to store a list of all of its observers.
The subject must have methods to add and remove observers.
All observers must implement a callback to invoke when the publisher sends a notification, preferably using a standard interface to simplify matters for the publisher. This interface needs to declare the notification mechanism, and it needs to have parameters for the publisher to send the necessary data to the observer.
Describe a MVC pattern
mplify development of applications that depend on graphic user interfaces. MVC abstracts code and responsibility into three different components: model, view, and controller.
What is the model in a MVC
the application’s data structure and is responsible for managing the data, logic and rules of the application. It gets input from the controller.
What is the view in MVC
visual representation (the presentation) of the data
What is the controller
akes in user input and manipulates it to fit the format for the model or view.
