Answer:
Various definitions of the SDLC methodology exist, but most contain the following phases.
Preliminary Analysis. In this phase, a review is done of the request. ...
System Analysis. ...
System Design. ...
Programming. ...
Testing. ...
Implementation. ...
Maintenance.
Step-by-step explanation:
There are four methods of acquiring data: collecting new data; converting/transforming legacy data; sharing/exchanging data; and purchasing data. This includes automated collection (e.g., of sensor-derived data), the manual recording of empirical observations, and obtaining existing data from other sources.