Make a one-to-many association

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Goal

• Add a one-to-many association such that
  • each User object has many BlogPost objects, and
  • each BlogPost object belongs to exactly one User object.

Steps

• Add the association declaration:
  • Add User - BlogPost to specify a new association between the User and BlogPost classes.
  • Add "author 1" on the User side to specify a multiplicity of 1 and a role name of author.
  • Add "post *" on the BlogPost side to specify a multiplicity of * and a role name of post.
  • Add : has > on the end of the declaration to specify an association name of has with the reading-direction triangle pointing toward the BlogPost class.

Reference Code

• One-to-many association code:

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