Management Functions

• Inputs:
  • employee ID
  • employee first name
  • employee last name
  • employee password
  • employee type
• Outputs:
  • new instance of employee added to database
• Errors:
  • employee ID already being used
  • employee password already being used
  • employee type invalid

• Inputs:
  • employee ID
• Outpus:
  • employee record removed from database
• Error Conditions:
  • employee ID doesn't exist
  • syntacticallly incorrect input

• Inputs:
  • employee first name
  • employee last name
  • employee password
  • employee type
• Outputs:
  • instance of employee record modified accordingly
• Error Conditions:
  • syntactically incorrect inputs
  • password invalid
  • employee type invalid

A manager must be able to read and search the employee database on the criteria outlined in the data structures section.

Records are never deleted- they are backed up for security reasons

• Inputs:
  • invoice number
• Outputs:
  • instance of invoice deleted from database
• Error Conditions:
  • syntactically incorrect input
  • invoice number doesn't exist

• Inputs:
  • invoice number
  • item ID
• Outputs:
  • item removed from customer bill
• Error Conditions:
  • syntactically incorrect input
  • invoice number doesn't exist
  • item number doesn't exist

• Inputs:
  • item ID
  • name of item
  • cost per unit
• Outputs:
  • new item added to the datastore
• Error Conditions:
  • item ID already being used
  • syntactically incorrect input

• Inputs:
  • item ID
• Outputs:
  • delete item from database
• Error Conditions:
  • item ID doesn't exist
  • syntactically incorrect input

• Inputs:
  • item ID
  • name of item
  • cost per unit
• Outputs:
  • instance of item modified in datastore
• Error Conditions:
  • item ID doesn't exist
  • syntactically incorrect input