I really want to know more about the update, export and the values that could be given to
I need to know when to use the update and when not? And what is the alternative?
These are changes that could happen over DB:
- new tables
- new columns in old tables
- columns deleted
- data type of a column changed
- a type of a column changed its attributes
- tables dropped
- values of a column changed
In each case what is the best solution?