« previous next »

Author Question: Briefly identify the four entity-relationship diagrams that are produced and analyzed during ... (Read 79 times)

kaid0807

  • Hero Member
  • *****
  • Posts: 515
on: Jul 7, 2018
Briefly identify the four entity-relationship diagrams that are produced and analyzed during conceptual data modeling.
 
  What will be an ideal response?

Question 2

One of the purposes of logical and physical database design is to choose data-storage technologies that will efficiently, accurately, and securely process database activities.
 
  Indicate whether the statement is true or false


lkanara2

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 7, 2018
Answer to Question 1

The four entity-relationship diagrams are: (1 ) an entity-relationship diagram that illustrates the data needed in the project's application; (2 ) an entity-relationship diagram for the system being replaced; (3 ) an entity-relationship diagram that illustrates the entire database from which the new application's data are extracted; and (4 ) an entity-relationship diagram for the entire database for the existing application system.
CL

Answer to Question 2

TRUE
Explanation: One of the five purposes of logical and physical design is to determine the data-storage for the database. Databases are often stored on multiple devices along with additional back-up devices.
CL


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

The experimental approach used by Masui and Markert to identify cyclin and cyclin-dependent kinase ( The experimental approach used by Masui and Markert to identify cyclin and cyclin-dependent kinase (
Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry. Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry.
Two views of the phylogenetic relationship between Neandertals and modern H. sapiens. Two views of the phylogenetic relationship between Neandertals and modern H. sapiens.
Terminology for Movement Produced by Muscles Terminology for Movement Produced by Muscles
Length-Tension Relationship Length-Tension Relationship
Diagrams a mitotic chromosome, showing how chromatin is condensed to produce it Diagrams a mitotic chromosome, showing how chromatin is condensed to produce it
Video: Mendel's Principles of Inheritance (Father of Genetics)

For a complete list of videos, visit our video library