2.1 KiB
ER and attributes for combat
Entity
A Battle has a Battle Number (the primary key) and Date(BattleDate) attribute.
A Combat has a Damage, Weapon and a Result attribute.
Relationship: Involved (battle)
A combat must have battle involved.
A battle will contain at least on combat.
Relationship: Involved (Attacker / Defender)
A combat must have at least 1 characters involved.
A Characters may contain empty combat history
ER and attributes for characters
Entity
A Characters has a Name(key), Type, Level, ExperiencePoints, MaxHealth, Health, AttackInScore, DefenceScore, StealthScore, ManaScore, MoneyBank MoneyWallet attribute.
Relationship: OwnedBy
A character must owned by one player
A player may have many characters
Relationship: OwnItems
An Items must owned by one character
A character may have many Items
If a character is deleted from the game server, the items will be deleted
Relationship: Involved
A Combat (either attacker/defender) must owned by one character
A character may involved in many combats
If a character is deleted from the game server, the combat will be deleted
ER and attributes for customers/players
Entity set
A customers has a AccountNumber(key), Name and EMailAddress attribute.
Name is a Multi-valued attribute containing Forename and Surname.
Relationship Owned By
A Characters must owned by one character
A customers/player may have many character
If a customer/player is deleted from the game server, the characters will be deleted
ER and attributes for items/inventory
Entity set
A Items has a ItemName, ItemType, WeaponType, Quantity, Range, SingleUse, Price, Equipped, BodyPart, Wearable, Worn attribute
A Score is a Multi-valued attribute containing ManaScore, DefendScore and AttackScore.
A ItemKey is an key to indicate the specific item
Relationship OwnedItems
A Items must owned by one character
A character may have many items
If a character is deleted from the game server, the Items will be deleted
Overview of ERs
