title: EntityFrameWork Migration Asp.net Core 2.0
body: <p>I have a Asp.Net core 2.0 project, with Entity framework Core 2.0Version. I have an existing database. Now enter packagemanager console window: <strong>Add-Migration</strong> then Name:<strong>InitialMigration</strong> after
  Migration folder added in my project. Then I Type <strong>Update-Database</strong> comment in package manager console window. <strong>'Table already exists'</strong> error message display. Because already that table have in my db.</p>
  <p>My requirement is when add or remove property in my existing model that property automatically update in my existing database. how can i do it?</p>