資料來源：	Xylax.net
作者：	tom at xylax dot net

• Simple Association (one to one)

• Simple Reference (many to one)

• Basic Collection (one to many)

• Collection-1 (many to many)

• Collection-2 (raw data)

• Top-level Collections

• Map

• Entity Map

• Subclasses

• Joined Subclasses

• Components

• Collections of Components

• Composite Id

• Composite Index

• Ternary Associations

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