Answer:
Top to bottom
Explanation:
A sequence diagram shows the sequence or the order in which the interaction between components takes place.
It places them in order of the occurrence of the events or interactions between the components or objects thus arranging these from top to bottom.
The sequence diagram shows the way an object in a system functions and the order it follows.
 
        
             
        
        
        
Answer:
Software for personal computers is typically developed and distributed independently from the hardware or operating system manufacturers. Many personal computer users no longer need to write their own programs to make any use of a personal computer, although end-user programming is still feasible. This contrasts with mobile systems, where software is often only available through a manufacturer-supported channel. And end-user program development may be discouraged by lack of support by the manufacturer.
Explanation:
 
        
             
        
        
        
We need more information for this one, please.
        
             
        
        
        
Answer:
1. Date 2. It will appear to the right of the selected column.