把下列句子翻译为中文(1) The operating system is the program that manages a computer 's resources.(2) Computer databases typically contain aggregations of data records or files.(3) Compressed files have to be extracted using a utility such as WinZip.(4) Calling cells by just their column and row labels is called relative referencing.(5) A database management system allows control of security and data integrity requirements.(6) On larger networks, the trip from one switch point to another in the network is called a hop.(7) A uniform resource locator is basically just an address for a file that can be given to a browser.