Week 1 Flashcards
Components of IT?
Hardware, software, data, network, procedures and people.
What is a GUI?
Graphical user interface
What is a Database?
Structured set of data, combined with tables.
Architecture is about?
Models (blueprints) for communication or understanding a phenomenon
Architecture means?
Models for IT to understand hardware, software, data, network, procedures and people in the business.
What is a flowchart?
Method of communication which is language independent.
What is a primary key?
Unique identifier for a table.
What is a foreign key?
A primary key from another table.
When do you use an Logical Data model?
Relational model
When you want to communicate, program independent (relational model).
When do you use an Conceptual Data model
Entity Relationship model
When design is important (easier to understand for customer).
Visualize what is going on in a database.
What are differences between Logical and Conceptual model?
Logical model has no many to many (N-N)
Logical model muast always have a primary key.
Conceptual model for current state.
Logical model for future state.
What is UML
Unified Modeling Language which includes several diagram types.
Used for seeing what is going on in software applications.
System diagram vs Business Diagram?
Two different perspectives
Business:
What they do
How it does that
System:
What they do
How it does that
CRUD
CRUD matrix is used for analyzing the current state of an organization.
Created for processes and entitites.
Create, read, update, delete
(Can also help improving processes)
What is Zachman Framework?
Sort of Periodic table for business. Organizing all the models created.
(No suggestions)