实时水雨情数据库概述 实时水雨情数据库采用SYBASE数据库管理系统,其库表共分三类,第一类是数据更新频率较低甚至是基本不变的表,称为基本信息表,共14个,此类表的表名以“_B”结尾,其数据必须由人工录入;第二类是更新频率较高的实时信息表,共25个,此类表的表名以“_R”结尾,其数据可以通过相应的软件系统自动入库;第三类是更新频率较高的存储预报类信息的表,称为预报信 Real-time water and rain information database Overview Real-time water and rain information database using SYBASE database management system, the library table is divided into three categories, the first is the data update frequency is low or even the same basic table, called the basic information table, a total of 14, The table name of such a table to “_B” the end of the data must be manually entered; the second is a more frequent update real-time information table, a total of 25, the table name of this table to “_R” the end of the data Can be automatically put in storage through the corresponding software system; the third type is a table with higher frequency of updating and storing forecast information, which is called forecasting letter