1.1.6 - problems from data migration

Question 1

Possible problems from data migration

Answer 1

• incomparable file formats
• data structure differences
• validation rules
• incomplete data transfers

Question 2

Incompatible file formats

Answer 2

Different versions of the same piece of software might not be compatible

Question 3

Data Structure Differences

Answer 3

Moving data from a table to a flat file, or from an array to a linked list, might cause a lot of problems

Question 4

Validation Rules

Answer 4

• these rules are applied to inputs
• if these are different at the destination then data will be rejected and lost

Question 5

Incomplete data transfers

Answer 5

If the actual transfer is interrupted, only partt of the data will be at the destination, leading to data loss