Khan Academy
Khan Academy: Representing Graphs
Some practice problems with data and graph representation in computer science.
Khan Academy
Khan Academy: Unit: Modeling Data Distributions
A complete unit with tutorials, text, and practice over modeling data distributions.
Microsoft
Microsoft: Relationships Between Tables in a Data Model
Add more power to your data analysis by creating relationships among different tables. A relationship is a connection between two tables that contain data: one column in each table is the basis for the relationship. To see why...
Khan Academy
Khan Academy: Challenge: Store a Graph
Practice graph representation with this challenge problem.
Khan Academy
Khan Academy: Representing Graphs
There are several ways to represent graphs, each with its advantages and disadvantages. Some situations, or algorithms that we want to run with graphs as input, call for one representation, and others call for a different representation....