PO:
persistant object
BO ：
business object
VO ：
value object value object, ViewObject presentation layer object
QO:
Query object
POJO ：
plain ordinary java object simple java object
DTO：
Data Transfer Object
DAO:
data access object
What do PO, BO, VO, QO, POJO, DTO, and DAO in java mean
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Origin blog.csdn.net/qq_36850813/article/details/103362409
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