Tugas – True or False :
1. If you split a logical process into multiple physical processes, or add additional physical
processes, you have to add all necessary data flows to preserve the essence of the original
logical process.
A. True
B. False
2. A physical database schema represents the implementation of one of the following: (1) a
database; (2) a table in a database; (3) a computer file; (4) a tape or media backup of
anything important; (5) any temporary file or batch as needed by a program; or (6) any
type of non-computerized file.
A. True
B. False
3. Point of sale terminals are now emerging as output devices and becoming common in
handheld and palm-top computers. Most are operated by the consumer and make it easy to
navigate online forms.
A. True
B. False
4. The classic example of optical mark recognition is the use of optical mark forms for
subjective-based questions on examinations.
A. True
B. False
5. A foreign key is an alternate identifier for a file. Its value may identify either a single file
or a subset of all files.
A. True
B. False
6. A secondary key might be created by combining the first and second fields. In this
situation, it is called a combination key.
A. True
B. False
7. A single file in a database may only have one foreign key, but it may have several primary
keys. To facilitate searching and sorting, a key sequence field is frequently created for
keys.
A. True
B. False