Learning Data

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One person, many systems: four ways to share the person, and the lightest that works

Linh wants to apply for a PhD at the university that once gave her a second student number, and its application still creates a person before anyone looks. There are four ways to give many systems one person: a registry that only links, a copy for analysis, a master that systems read back, and one place where people are created. Each costs more than the last. The university has the first two, and neither stops a third number. People come in at two doors, so those two read the person back, the application searches before it creates anyone, and the other systems keep their links. Choose the lightest way that solves the problem.

5 minPause and thinkEnglish captions

Builds on For this purpose only

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Take it apart, then make the call

This film's labs, and its situations, among the series' 29 labs and 72 situations. Your progress stays in this browser.

Take it apart: Four ways to keep it →Take it apart: Search before you createTake it apart: Who may create a person?Make the call: 8 situationsEvery lab

In the series: The same one, everywhere

Film 7 of 9.

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For this purpose only

Data given for one role isn't free for every role. Write each role's purposes beside its data, and keep the person's wishes with her.

5 min · Pause and think · The same one, everywhere

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A hub at work

Rules act, AI suggests, people decide: a week in a master data hub, and five questions to ask any hub.

4½ min · Pause and think · The same one, everywhere

  1. 1One person, many roles
  2. 2Who is it?
  3. 3Which value wins
  4. 4Roles come and go
  5. 5Lists everyone uses
  6. 6For this purpose only
  7. 7One person, many systems
  8. 8A hub at work
  9. 9Kept, not cleaned