What should a database developer include in a quality check checklist to ensure tables match the logical schema?

What should a database developer include in a quality check checklist to ensure tables match the logical schema?

• A. Are the tables secured?
• B. Are the fields in the tables as expected with appropriate attributes?
• C. Are all errors logged?
• D. Are user complaints addressed?

Answer: (B)

Including a check for whether the fields in the tables are as expected with appropriate attributes is vital for ensuring that the tables match the logical schema. The logical schema serves as the blueprint for how data is structured within the database, defining the tables, fields, data types, and relationships among them.

When evaluating the fields in the tables, a developer should verify that each field aligns with the logical design—this means confirming that the correct data types (such as integer, string, date, etc.) are used, that any constraints (like primary keys or foreign keys) are appropriately implemented, and that field lengths and default values conform to the specifications in the logical schema. This verification is crucial because a discrepancy between the actual database structure (the physical schema) and the logical schema can lead to data integrity issues, unexpected errors, and ultimately affect the application's functionality that relies on this database.

The other options focus on security, error logging, and user feedback, while they are all important aspects of database management and maintenance, they do not directly pertain to verifying that database tables are correctly structured according to the logical schema.