【单选题】在雇员信息表关系EMP中,哪个属性是外键(foreign key)?
【单选题】已知函数y=log 3 x,当x>1时,则( )
【判断题】and from that a computer is turned on to that the operating system prepares to accept input form the owner, there is a program called bootstrapper downloads the operating system kernel into RAM.
【单选题】在雇员信息表关系EMP中,哪个属性是外键(foreign key)?
【简答题】考察下面程序段: procedure p(x,y,z) begin y:=y+1; z:=z+x; end; begin a:=2; b:=3; p(a+b,a,a); write(a); end; 若参数通信分别是: (1) 传值调用 (2) 传名调用 方式,上述程序执行后,输出 a 的值分别是多少?要简述做题过程。
【单选题】The basic unit of software that the operating system deals with in scheduling the work done by the processor is ( ).
A.
a program or subroutine
B.
a modular or a function