= P9 – Other Topics (Performance, Security, Integrity, API Security) =

== Overview ==
This phase covers additional important topics that improve a database-driven application in real production environments.
Each team member contributes with one sub-topic, explained with simple examples connected to the Wedding Planner system.

== Topics / Subpages ==
 * [[P9Performance|Performance (Indexes, Query Optimization)]]
 * [[P9Security|Security (SQL Injection, Least Privilege)]]
 * [[P9Integrity|Data Consistency / Integrity (Constraints, FK, Cascade)]]
 * [[P9APISecurity|API Security (Validation, Rate limiting, Auth basics)]]

== Notes ==
Each topic includes:
 * beginner-friendly explanation
 * at least one concrete example (SQL snippet / rule / pseudo-code)
 * connection to the Wedding Planner project