0.6.21 Module 6 Quiz Study Guide

Data Is Represented Information

Data is information represented so it can be stored, communicated, or processed.

Examples include:

  • names;
  • numbers;
  • dates;
  • true/false states;
  • files;
  • images;
  • structured records.

A value becomes easier to interpret when its context is clear.

For example:

Activity diagram showing one row one record, then one column one field, then one cell one field value for one record.
OneRowOneRecord.
  • New
  • Changed
  • Removed

Headers make the field meanings visible.

Records and Fields Describe the Logical Structure

A record represents one item.

A field represents one defined piece of information about that item.

For a song table:

Activity diagram showing supplied CSV, then supplied C# loading workflow, then application data, then DataGrid.
SuppliedCSV.
  • New
  • Changed
  • Removed

The goal is to recognize that representative CSV records and fields remain associated correctly when displayed by the application.

Module 6 Connects Organization, Modeling, and Presentation

The overall progression is:

Activity diagram showing raw information, then structured records and fields, then clean data, then unique identity and relationships, then ERD UML structural models, then sorting, filtering, summaries, and charts.
RawInformation.
  • New
  • Changed
  • Removed

The important question throughout the module is: