Network, tree, and relational models are examples of database structure at which level?

A$)$ Physical level

B$)$ Logical level

C$)$ Conceptual level

D$)$ Hierarchical level

The database structure which allows a child segment to have more than one parent is the

A$)$ network.

B$)$ sequential.

C$)$ tree.

D$)$ object.

The logical structure most commonly used in business today is the

A$)$ tree structure.

B$)$ network structure.

C$)$ hierarchical structure.

D$)$ relational structure.

A list of activities that is strategic to the project to keep it on schedule is called

A$)$ the critical path.

B$)$ a PERT diagram.

C$)$ a Gantt chart.

D$)$ the manager's priority matrix.

The first major step in systems implementation is

A$)$ review the systems design.

B$)$ establish plans and controls.

C$)$ evaluate the new system.

D$)$ execute activities.

The document that shows the order in which activities may be performed and may be expanded to include estimated times for each individual activity is the

A$)$ Gantt chart.

B$)$ network diagram.

C$)$ PERT diagram.

D$)$ CPM diagram

The execution of the systems implementation should begin with

A$)$ conversion.

B$)$ a formal announcement to employees.

C$)$ employee training.

D$)$ programming.