Chapter 1
Database Fundamentals
Course: Comptia Datasys Ds0 001
Subject: Comptia Datasys Plus Ds0 001
Chapter: Database Deployment
4. Testing
Testing is a critical phase in the database deployment lifecycle, designed to ensure correctness, performance, security, and compliance with business and technical requirements. It includes structural verification, logic validation, data integrity assurance, and performance benchmarking.
Proper testing not only uncovers bugs and schema mismatches but also helps assess how the database behaves under different loads and scenarios (e.g., high concurrency, large datasets, edge case inputs).
a. Database Quality Check (Tables, Columns, Fields)
This involves verifying that all database objects (tables, columns, indexes, constraints, and relationships) are implemented according to the logical and physical design specifications.
Validation Steps:
- Table existence: Ensure all required tables are created (INFORMATION_SCHEMA.TABLES or pg_tables).
- Column definitions:
Correct data types: e.g., INT, VARCHAR, TEXT, DECIMAL(10,2)
Proper constraints:
NOT NULL to prevent null entries in required fields