I bought a "bargain" computer cable that did not connect the DB connector's mechanical ground shell to the cable's shield.
我买了一根廉价的计算机电缆，就是没有把DB连接器的外壳接电缆的屏蔽层。
2
The DB-aware object knows how and where to connect, how to build a SQL statement and get it executed, and how to take the result data and store it into the analysis object.
DB - aware对象知道从哪里怎样连接，怎样建立一个SQL语句并使之执行，以及怎样获得结果数据并存储到该分析对象中。
3
LIST the databases in local database directory and try connecting to it: DB2 LIST DB directory, DB2 connect.
列出本地数据库目录下的数据库，然后尝试连接数据库：DB 2 LIST DB DIRECTORY、DB 2 connect。