* Assuming formed branch of the successful implementation of all the commands, we must change with mysqli_commit function will save to the database system. Please note that once this function is called, the transaction can not be withdrawn. First, you need to update your "relational" database management system of knowledge. In the chart there is no "top" or "bottom" of the N-line concept. But the result set has the top or bottom of the concept. You can FETCH FIRST N ROWS ONLY clause to get started in the N-line, but get the bottom of the N-line is a more difficult problem. To achieve this, you need a scrollable cursor. scrollable cursor allows you to not have to read take / get all the rows in the result set before moving around. I suggest you read the manual and the DB2 DB2SQL application reference manual can scroll the contents of the pointer. Basically, you should use a scrollable cursor FETCH LAST statement, then FETCH PRIOR loop to N-1 times. That would give any result set of the "bottom" of the N rows.
As in the North campus of the University network is built in three phases, so the campus network is a typical heterogeneous IT environment, not so easy to manage. Only the server brands, including HP, IBM, DELL, SUN, wave, Lenovo. Network equipment, including Huawei, CISCO, JUMP, and other brands. And the server is running, including Windows and Unix operating systems, etc., which requires network management software for the hardware and system support, and compatibility of all have a certain standard. At the same time the physical level, IT must be able to monitor the different brands, different levels of the servers physical hardware. These include monitoring temperature, power supply and components function. In addition, monitoring server performance, but also to the server CPU usage, available hard disk space and memory availability for monitoring. Since these features can be for administrators in troubleshooting and server optimization, etc. to provide the necessary help. However, to ensure the healthy and stable network operation, also need to be assured in the following aspects: 3, can effectively enhance the management efficiency and strengthen management tools network management products. These three areas complement each other, are indispensable, especially when the network developed to a certain size, the face of the shortage of technical personnel and high mobility, when a third-party network management software utility is particularly important.