Database Initialization

Why Database Initialization Matters

Spring Boot auto-executes schema.sql and data.sql for database initialization, with seamless Flyway/Liquibase integration for versioned migrations. In production systems with 100+ database tables, automated schema versioning eliminates manual SQL scripts—tracking database evolution through migration files with rollback capability and multi-environment support.

Problem: Manual database initialization requires custom SQL scripts and version tracking logic.

Solution: Spring Boot schema.sql/data.sql + Flyway/Liquibase auto-configuration.

Implementation Example

// Implementation details for database-initialization
// See full guide for comprehensive examples

Production Configuration

# Configuration for database-initialization
# See full guide for detailed configuration

Production Patterns

Best Practices:

• Use Flyway for production (versioned migrations)
• Disable schema.sql in production (spring.sql.init.mode=never)
• Separate migrations per environment (V1init.sql, Rseed_data.sql)
• Test migrations in staging before production

Trade-offs

Production recommendation: Use Flyway for production schema versioning. Schema.sql only for development/testing.

Next Steps

• Spring Data JPA - Repository patterns
• Multiple Datasources - Multi-database setup