Topic 1

Question 1

3 considerations for Changing to a New System

Answer 1

• The extent of the change
• Limitations of the new system. What can the new system not do that the old one could?
• Implications on the workforce in an organization during the change to the new system

Question 2

3 difficulties in changing to a new software system

Answer 2

• Users don’t want to learn how to use the new system
• Data loss
• Expensive

Question 3

Direct Changeover (Changing Systems)

Answer 3

Old system stops, then new system starts

Question 4

Parallel (Changing Systems)

Answer 4

Old and new system run simultaneously - any new data is entered into both systems

Question 5

Pilot (Changing Systems)

Answer 5

New system tested with small part of organization, bugs are fixed, then expanded into rest of the organization

Question 6

Phased (Changing systems)

Answer 6

New system is introduced in phases of features, gradually phasing out the old system

Question 7

Pros and Cons Direct Changeover

Answer 7

PROS:
- Changeover is quick. New system can be immediately used.

CONS:
- Since the old system is immediately made redundant, there isn’t a backup system if the new system has problems

Question 8

Pros and Cons of Parallel

Answer 8

PROS:
- There is a backup system if the new one has problems
- You can compare outputs of new system to old system to verify that the new system is working correctly

CONS:
- Running both systems is expensive

Question 9

Pros and Cons Pilot

Answer 9

PROS:
- All features are tested to see if they function before being used by the whole organization.
- Staff who are part of pilot can train others after
- If there is failure, only a small part of the organization suffers

CONS:
- No backup system for pilot group in case of failure

Question 10

Pros and Cons Phased

Answer 10

PROS:
- Allows people to gradually get used to the new system
- Training can be done in stages rather than all at once

CONS:
- If system fails, there is no backup for the parts of the system that have been phased in

Question 11

Data Migration (Changing Systems)

Answer 11

When we are switching systems, we have to move data from one system to another. This can be a huge system depending on the amount of data being transferred.

Question 12

3 possible problems during data migration when switching systems

Answer 12

• Incompatible File Formats
• Different data structures
• Validation rules

Question 13

Legacy System Definition

Answer 13

Old technology, computer system or application that is outdated/no longer supported but still in use.

Question 14

SAAS

Answer 14

Software as a service. Software that is paid for in a subscription fee style and can be used on any computer via the internet.

Question 15

Local vs Remote SAAS

Answer 15

Local - Runs on your computer

Remote - Accessed through a web browser

Question 16

Testing software

Answer 16

Processes of testing software to make sure it meets what it’s supposed to do

Question 17

Static testing