Introduction - If you have any usage issues, please Google them yourself
Delphi 7 to test the database connection pool through objects, there are two ways to ADO and DBExpress are compatible with the SQLServer and oracle, used to create TDBExpPool or TADOPool, execute a query directly call OpenSQL, returns a TataSet, released after use. insert statement using ExecSQL, if you want to use transactions, please call GetDBConn get a DBConn, then call Enter, when the incoming call Pool of ExecSQL this DBConn, Leave can be used up.