Tag: technology

A diagram showing the domains of all attributes in the data model

A schedule of data modeling steps

A plan of action for database design

A diagram showing the flow of data in an application

A graphical or language representation of a data model or database

Entity

Category

Hierarchy

Relationship

Atttibute

Join

View

Field

Table

Tuple

Data about data

Describe a data dictionary

Self-describing

Includes user data

Supports its own structure

Logical Data Model

Physical Data Model

Network Data Model

Conceptual Data Model

third normal form

the standard of a flat file

second normal form

first normal form

a key that contains only a single field

a key field

a numerical field

a single valued field

replace relational design

be close to a users perception of the data

enable detailed descriptions of data query processing

enable low level descriptions of data

system planning and selection

systems design

systems analysis

systems implementation and operation

systems evaluation

top-down approach

bottom-up approach

overview approach

business approach

conceptual approach