CompTIA Data+ DA0-002 (V2) Practice Question

The correct answer is the database schema. The schema serves as the blueprint for a relational database, formally defining its structure, including tables, the columns and data types within those tables, and the relationships between them (such as primary and foreign keys). A data dictionary provides descriptive information and business context about the data elements but is not the formal structural blueprint itself. A fact table contains quantitative business metrics and is a component within a schema, not the overall blueprint. A bridge table is a specific type of table used to resolve many-to-many relationships and is also a component within a schema.