A company database needs to store information about employees (identified by ssn, with salary and phone as attributes), departme
nts (identified by dno, with dname and budget as attributes), and children of employees (with name and age as attributes). Employees work in departments; each department is managed by an employee; a child must be identified uniquely by name when the parent (who is an employee; assume that only one parent works for the company) is known. We are not interested in information about a child once the parent leaves the company.Draw an ER diagram that captures this information.
DTP is the kind of software where designers and graphic artists can print finished publications on a color printer, take them to a professional printer, or post them on the web.
<span>When using the wait and signal operations, Wait sets the process's process control block to the blocked state and links it to the queue of processes waiting to enter this particular critical region.</span>
