[User Story] - As a user, I want to create, rename, and delete tables (called Sheets) within a database so that I can effectively manage and organize my data.

[ichirokentaro]

##User Story:

• As a user, I want to create, rename, and delete tables (called Sheets) within a database so that I can effectively manage and organize my data.

##Acceptance Criteria:

1. Create Sheet:

   • Given I am viewing a Base, when I click the "Add New Sheet" button, then I should see a prompt or form to enter the name of the new Sheet.
   • Given I have entered a name for the new Sheet, when I click the "Create" button, then the new Sheet should be created and added to the list of Sheets within the Base.
   • Given I have successfully created a new Sheet, when I view the list of Sheets, then I should see the newly created Sheet with the specified name.

2. Rename Sheet:

   • Given I am viewing a list of Sheets within a Base, when I select a Sheet and click the "Rename" option, then I should see a prompt or form to enter a new name for the Sheet.
   • Given I have entered a new name for the Sheet, when I confirm the rename action, then the Sheet should be updated with the new name.
   • Given I have successfully renamed a Sheet, when I view the list of Sheets, then I should see the Sheet with the updated name.

3. Delete Sheet:

   • Given I am viewing a list of Sheets within a Base, when I select a Sheet and click the "Delete" option, then I should see a confirmation prompt asking if I am sure I want to delete the Sheet.
   • Given I have confirmed the deletion, when I proceed with the delete action, then the selected Sheet should be removed from the list of Sheets.
   • Given I have successfully deleted a Sheet, when I view the list of Sheets, then I should no longer see the deleted Sheet.

4. User Feedback:

   • Given I have created, renamed, or deleted a Sheet, when the action is completed, then I should receive a confirmation message or notification indicating the successful completion of the action.

5. Validation for Name:

   • Given I am creating or renaming a Sheet, when I enter a name, then the system should validate that the name is not empty and does not duplicate an existing Sheet name within the same Base.
   • Given I have entered an invalid name for a Sheet, when I try to create or rename the Sheet, then I should see an error message indicating the problem.