Logical data modeling depicts the organization of data and its interrelationships without concern for physical storage and representation. Why is it useful to develop logical models of data? What is the relationship between the data stores of a DFD and the logical data model of some or all of the systems under discussion?
True or false ?
Data represents real-world things.
Information is simply a collection of raw facts, such as an employee number or the total hours worked in a week.
Information and data are essentially the same thing.
A set of logically related tasks performed to achieve a definite outcome is called a process.
Organizations invest heavily in information systems to improve customer service.
C2C stands for computer-to-computer e-commerce.
Multiple choice questions:
The process of defining relationships among pieces data to create useful information requires what?
An information system
Intelligence
Knowledge
Intuition
What do we call people who create, use, and disseminate knowledge and who usually are professionals in science, engineering, business, and other areas?
Systems analysts
Knowledge workers
Knowledge database administrators
End users
The value of information is directly linked to how it helps decision makers achieve their organization’s what?
Culture
Goals
Cost reduction
Initiatives
Quality improvement measures
What consists of computer equipment used to perform input, processing, and output activities?
The motherboard
A register
Software
Hardware
