Using AL in Microsoft Dynamics 365 Business Central — Lesson 2: Tables, Pages, Codeunits, Events, and Business Logic

Topics Covered

• Create tables, table extensions, keys, fields, and data classifications
• Build pages, page extensions, actions, controls, and user interactions
• Develop codeunits, procedures, events, subscribers, and reusable business logic
• Step-by-step implementation workflow and configuration decisions
• Hands-on verification of core features, data, and expected results
• Documentation of assumptions, dependencies, naming, and change controls

Guided Practice Steps

1. Translate the lesson requirement into a clear Using AL in Microsoft Dynamics 365 Business Central implementation or analysis objective.
2. Document assumptions, selected tools or features, dependencies, risks, and expected results.
3. Perform the guided task, capture evidence, and compare the result with the acceptance criteria.
4. Record issues, corrective actions, and a reusable operational or development note.

Practical Activity

Create a table extension, page extension, validation logic, and event subscriber.

• Define the scenario, inputs, constraints, and expected outcome.
• Complete the activity and preserve screenshots, outputs, logs, code, or decision evidence.
• Review the result, identify gaps, and document corrective or improvement actions.

Validation Checklist

• The stated requirement and expected outcome are clear.
• Configuration, code, data, or design decisions are documented.
• Normal, boundary, failure, security, and operational considerations are reviewed.
• Evidence supports the conclusion and the next action is prioritized.

Lesson Outcome

Learners can explain and apply Tables, Pages, Codeunits, Events, and Business Logic within a realistic Using AL in Microsoft Dynamics 365 Business Central scenario and support the result with validation evidence.