entity relationship - Creating the ER Model after the creation fo the database -


i've created program runnning on web (html) booking tickets on cinema theater.

i want create er model.

as far know, logical sequence of actions is:

  1. create er model
  2. generate physical model
  3. create database

so now, when try create er model, relation between entities doesn't seem right. on other hand, if add more entities customer or admin, means have created more tables database don't need.

anyone can me in one?


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