Oracle Database 19c: SQL Workshop — Lesson 4: DDL, Constraints, Views, Sequences, Synonyms, and Access

Technical Scope

• tables and ALTER operations
• primary, foreign, unique, check, and NOT NULL constraints
• views, sequences, indexes, and synonyms
• object privileges, dictionary views, and cleanup

Instructor Demonstration

Demonstrate tables and ALTER operations inside a sales-and-staffing schema where every query must include an expected result, row-count check, and edge case, then capture the exact configuration, command, transaction, report, or code evidence that proves the result.

Applied Workshop

Implement a controlled workshop covering primary, foreign, unique, check, and NOT NULL constraints and views, sequences, indexes, and synonyms, then test a failure or exception involving object privileges, dictionary views, and cleanup.

1. Confirm environment, identity, data, dependencies, and expected result.
2. Complete the product-specific implementation or analysis.
3. Capture commands, configuration, output, logs, transactions, or reports.
4. Explain the operational, security, performance, or business trade-off.

Validation Standard

The DDL, Constraints, Views, Sequences, Synonyms, and Access result must be reproducible, traceable to approved inputs, and consistent with the expected Oracle product behavior.

• The intended target and ownership are verified.
• The result is supported by reproducible evidence.
• Security, performance, reliability, and support impact are reviewed.
• Unexpected behavior is investigated before acceptance.

Failure Analysis

Diagnose issues in tables and ALTER operations, primary, foreign, unique, check, and NOT NULL constraints, views, sequences, indexes, and synonyms, or object privileges, dictionary views, and cleanup without making an unverified production change.

Learners isolate the smallest proven cause, apply a reversible correction, rerun validation, and record the preventive action.