Course Curriculum
1 Lessons List
BelongsTo vs BelongsToMany vs Polymorphic: 3 Examples
8 min read
HasOne Relationship: 2 Examples
5 min read
Database Normalization: Three Normal Forms
5 min read
HasMany Delete Parents: Validate or Cascade
6 min read
Polymorphic Many-to-Many: "Trick" To Query Data
3 min read
Naming Things in Databases: 4 Tips
6 min read
Pivot Tables and Extra Field Operations
5 min read
Foreign Keys to "Grandparent": Duplicate Data?
4 min read
UUID or ULID to Hide the Main ID
3 min read
JSON Column Type: in Which Scenarios?
5 min read
Enum DB Columns, PHP Enums and Foreign Keys
5 min read
Custom Fields for E-Shops: EAV Model
5 min read
Unlimited Levels of Parent-Children
6 min read
Invoice Numbers with Series Prefixes
4 min read
Order Status History and Querying Latest Status
5 min read
Indexes: Useful, Useless and Composite
5 min read
Non-Standard Primary Keys and Unique Indexes
3 min read
Practice: Change DB Structure in "Live" Project
6 min read