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Work · Guided lesson

Match rosters to session evidence

About 10 minutes · 3 reading + 7 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
See this course’s project requirements

A supplied fictional class-attendance audit with session counting rules, late corrections, duplicate/missing record resolution, approved-contact messages and a source-linked report.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • Prepare a six-pair blank record structure; include the original-case decision evidence and a separate changed-case result.
  • Reconcile the matched roster and source gaps; include the original-case decision evidence and a separate changed-case result.
  • Record the two measures with their distinct definitions; include the original-case decision evidence and a separate changed-case result.
  • Create a correction log and regenerate status counts; include the original-case decision evidence and a separate changed-case result.
  • Draft a minimal unsent notice and access decision record; include the original-case decision evidence and a separate changed-case result.
  • Write an auditable brief with sources and next owner; include the original-case decision evidence and a separate changed-case result.

Review and revise

Use these criteria to check your work and choose what to improve.

  • The final packet uses the supplied task-specific constraints and all six records agree.
  • Every result can be traced to an identifier, input, calculation or stated decision rule.
  • Changed-case practice updates dependent records and keeps holds or uncertainty visible.
  • The packet states the learner role, authority boundary and specific next verification needed before real work.
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Before you begin

The idea in everyday life

Original fictional workplace practice; paper or a local document is sufficient. The rules and records below are supplied for this exercise, not asserted universal workplace policy. Pine evidence: Mon AM S1P, S2A, S3P; Mon PM S1P, S2P; S3 missing. Roster still contains all three for both sessions. No E status supplied.

The idea

A join must preserve every expected student-session pair, then attach the correct source rather than silently dropping missing matches.

Follow along

Match rosters to session evidence — worked practice

A join must preserve every expected student-session pair, then attach the correct source rather than silently dropping missing matches.

Pine evidence: Mon AM S1P, S2A, S3P; Mon PM S1P, S2P; S3 missing. Roster still contains all three for both sessions. No E status supplied. Use paper or a local document. Preserve the original case and make a separate changed-case record.

  1. 1. Step 1

    Create the expected six pairs from the roster.

    You should see: Mon AM/Mon PM each S1, S2, S3.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  2. 2. Step 2

    Attach the named session evidence to each pair.

    You should see: Five pairs have an assigned status.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  3. 3. Step 3

    Preserve S3Mon PM as unknown with a source question.

    You should see: S3Mon PM=U; no absence inferred.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  4. 4. Step 4

    Reconcile the matched roster and source gaps.

    You should see: A six-pair attendance join with 4P,1A,1U andone S3Mon PM source gap.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

Now change one thing

A signed Mon PM register arrives showing S3A. How many unknown pair remain?

Your work

What to finish

Reconcile the matched roster and source gaps; include the original-case decision evidence and a separate changed-case result.

Common mistake

Watch for this

Using an inner-only match that removes unknown attendance pairs from the report.

How can I tell I understand it?

Using the supplied identifiers, I can reconcile the matched roster and source gaps. My changed-case record names the revised condition and explains which dependent decision it changes.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

1Pine Mon PM evidence omits S3. Which status belongs in the matched record?
2How many P statuses does Pine’s supplied five-record evidence contain?
3Why retain all 6Pine roster pairs when only 5 have evidence?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
2
Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

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Sources and further reading

Explore the references behind this lesson.

43-6014.00 - Secretaries and Administrative Assistants, Except Legal, Medical, and Executive
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

43-9021.00 - Data Entry Keyers
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

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