Database Design Flashcards
system that provides for data collection, storage, and retrieval
Information System
An information system is composed of
- hardware,
- the DBMS and other software, database(s),
- People
- Procedures
the process that establishes the need for an information system and its extent.
System Analysis
System Development
System Development
three factors an information system depends on
Database design and ______________
implementation
three factors an information system depends on
________ design and implementation
Application
three factors an information system depends on
____________ procedures
Administrative
the process of database design and implementation
Database Development
to create complete, normalized, no redundancy, and fully integrated conceptual, logical, and physical
database models is the primary objective of what?
Database Design
This phase includes creating the database storage structure, loading data into the database, and providing for data management.
implementation
a cycle that traces the history of an information system.
System Development Life Cycle (SDLC)
System Development Life Cycle (SDLC)
This phase yields a general overview of the company and its objectives
PLANNING
System Development Life Cycle (SDLC)
This phase of the SDLC is, in effect, a thorough audit of user requirements.
ANALYSIS
System Development Life Cycle (SDLC)
This phase includes all the necessary technical specifications for the screens, menus,
reports, and other devices that might help make the system a more efficient information
generator
DETAILED SYSTEMS DESIGN
System Development Life Cycle (SDLC)
This phase is where actual database is created, and the system is customized by the creation of table
views, user authorization and so on.
IMPLEMENTATION
System Development Life Cycle (SDLC)
This phase is where the system is operational and end users begin to request changes in it
MAINTENANCE
system maintenance activities
maintenance in response to systems errors
Corrective maintenance
system maintenance activities
maintenance due to changes in the business environment
Adaptive maintenance
system maintenance activities
maintenance to enhance the system
Perfective
A cycle that traces the history of a database within an information system.
DATABASE LIFE CYCLE
The overall purpose of the database initial study
- Analyze the company situation
- Define problems and constraints
- Define objectives
- Define scope and boundaries
most critical DBCL phase since it will make sure that the final product meets the user and system requirements.
DATABASE DESIGN
Two views of data
data as a source of
information
business view
Two views of data
data structure, its access, and the activities required to transform the data into information.
designer’s view