You can change how the text fits in the table cells by changing the height of rows and the width of columns. _________________________
Answer the following statement true (T) or false (F)
True
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Create an ER diagram for each of the following descriptions:
(a) Each company operates four departments, and each department belongs to one company. (Note when the exact cardinality is known (in this example, 4) a value can replace the multiplicity range. (b) Each department in part (a) employs one or more employees, and each employee works for one department. (c) Each of the employees in part (b) may or may not have one or more dependants, and each dependant belongs to one employee. (d) Each employee in part (c) may or may not have an employment history. (e) Represent all the ER diagrams described in (a), (b), (c), and (d) as a single ER diagram.
Specify the following queries on the COMPANY relational database schema shown in Figure 3.5, using the relational operators discussed in this chapter. Also show the result of each query as it would apply to the database state of Figure 3.6.
(a) Retrieve the names of employees in department 5 who work more than 10 hours per week on the 'ProductX' project. (b) List the names of employees who have a dependent with the same first name as themselves. (c) Find the names of employees that are directly supervised by 'Franklin Wong'. (d) For each project, list the project name and the total hours per week (by all employees) spent on that project. (e) Retrieve the names of employees who work on every project. (f) Retrieve the names of employees who do not work on any project. (g) For each department, retrieve the department name, and the average salary of employees working in that department. (h) Retrieve the average salary of all female employees. (i) Find the names and addresses of employees who work on at least one project located in Houston but whose department has no location in Houston. (j) List the last names of department managers who have no dependents.
Naming an array, stating its type and specifying the number of elements in the array is called _________ the array.
Fill in the blank(s) with the appropriate word(s).
Any delay in a(n) slack task could delay the project completion date.
Answer the following statement true (T) or false (F)