DB 2内存是按不同级别分配的。

DB2 memory gets allocated at different stages.

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Oracle 是在实例和数据库启动时把内存分配给它们的，而 DB2 则是在不同级别上分配内存。

Unlike Oracle where memory is allocated to both the instance and the database upon startup, DB2 allocates memory at different levels.

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员工权限分配灵活严谨，可以设置操作人员不同级别的操作权限，信丰快递管理系统避免越权操作，数据相互保密。

Precise and flexible allocation of staff privileges, the operator can set different levels of operating authority, to prevent unauthorized operation, data confidentiality with each other.

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