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create or replace package GLOBAL_CONSTANT is
  
/*ÊýÖµÀà³£Á¿*/
/*±ÈÂÊ*/
rate_tax CONSTANT NUMBER     := 1.17; -- ˰ÂÊ                 
  
/*ÕûÊý*/
size_decimal CONSTANT NUMBER   := 8; -- ²ÆÎñʹÓõÄСÊýµã±£´æÎ»ÊýСÊýµãλÊý
size_percent CONSTANT NUMBER   := 4; -- °Ù·ÖÊýСÊýµãºóÁ½Î»
/*¼Û¸ñ*/
price_400    CONSTANT NUMBER   := 1800; -- 400µç»°¼Û¸ñ
  
/*×Ö·ûÀà³£Á¿*/
code_product CONSTANT VARCHAR2(20) := 'abc';
end GLOBAL_CONSTANT;
create or replace package body GLOBAL_CONSTANT is
end GLOBAL_CONSTANT;
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GLOBAL_CONSTANT.rate_tax
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