Chapter 9, Problem 7P

Program Plan Intro

DBLC (DataBase Life Cycle):

• DBLC is a sequential process which is used to trace the history of the application that is present within the information system.
• The history of the application can be traced from the beginning till its last even though being outdated.
• DBLC is concurrent to Software Development Life Cycle (SDLC) because the database represents the core of the information system.
• It is composed of six phases:
  • Initial study:
    • Examining the operations of the current system.
  • Design:
    • It focuses on designing the database model which satisfies both operation and objectives of the company.
  • Implementation and loading:
    • It is a process of designing the specifications.
  • Testing and evaluation:
    • Ensure the database performance.
  • Operation:
    • The process that is designed to make it operational.
  • Maintenance and evolution:
    • Performs routine maintenance activity within the database.