# Character Skill Handler Documentation

## Overview
This document describes the database relationships and interactions for the `dbCharacterSkillHandler` class. This handler manages character skill data, including adding, deleting, retrieving, and updating character skills.

## Handler Class
**File:** `src/engine/db/handlers/dbCharacterSkillHandler.java`
**Class:** `dbCharacterSkillHandler`
**Extends:** `dbHandlerBase`

## Database Tables

### Main Table
- **Table Name:** `dyn_character_skill`
- **Description:** Stores dynamic skill information for characters including skill base ID, character ID, and training levels
- **Columns:** 
  - UID (Primary Key)
  - CharacterID
  - skillsBaseID
  - trains

## Key Queries

### Add Skill
```sql
INSERT INTO `dyn_character_skill` (`CharacterID`, `skillsBaseID`, `trains`) VALUES (?, ?, ?);
```
**File:** `dbCharacterSkillHandler.java`, Line ~20

### Delete Skill
```sql
DELETE FROM `dyn_character_skill` WHERE `UID` = ?
```
**File:** `dbCharacterSkillHandler.java`, Line ~43

### Get Skill by ID
```sql
SELECT * FROM `dyn_character_skill` WHERE `UID` = ?
```
**File:** `dbCharacterSkillHandler.java`, Line ~59

### Get All Skills for Character
```sql
SELECT * FROM `dyn_character_skill` WHERE `CharacterID` = ?
```
**File:** `dbCharacterSkillHandler.java`, Line ~80

### Update Trains
```sql
UPDATE `dyn_character_skill` SET `trains`=? WHERE `UID` = ?
```
**File:** `dbCharacterSkillHandler.java`, Line ~104

### Update Database
```sql
UPDATE `dyn_character_skill` SET `skillsBaseID`=?, `CharacterID`=?, `trains`=? WHERE `UID`=?
```
**File:** `dbCharacterSkillHandler.java`, Line ~123

## Relationships

1. **Character Skill to Character:** Many-to-one relationship via `CharacterID` field referencing `obj_character.UID`
2. **Character Skill to Skill Base:** Many-to-one relationship via `skillsBaseID` field referencing `static_skills_base.ID`

## Java Field to Database Column Mappings

| Java Field | Database Column | Notes |
|------------|-----------------|-------|
| `characterID` | `dyn_character_skill.CharacterID` | Reference to character |
| `skillBaseID` | `dyn_character_skill.skillsBaseID` | Reference to skill base |
| `trains` | `dyn_character_skill.trains` | Training level |