Class Diagrams

Use class diagrams to capture how classes relate to each other. Let us start with the following classes:

• user: a ``user'' object represents a registered user.
• bookmark: a ``bookmark'' object represents a bookmarked recipe for a particular registered user.
• recipe: a ``recipe'' object represents a particular recipe.
• feedback: a ``feedback'' object represents a feedback message regarding a recipe.

Figure out and document how these classes relate to each other using the three types of relationships. Indicate the multiplicity of each end of a relationship according, and explain your rationale when it may not be obvious.

You can introduce additional classes if you feel they are needed.