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pantera1 [17]
3 years ago
5

explain the key reasons why entity relationship modeling is important, and determine at least (1) way in which it impacts the ov

erall development of the database.
Computers and Technology
1 answer:
Dimas [21]3 years ago
7 0

1st step in the data base design is data modeling. Data modeling involves conceptual data modeling and physical data modeling. E-R modeling is widely using to tool for conceptual data modeling.

A data model describes the structure of a database. Structure of data means describing the entities involved in the data base and their attributes, relationships among the entities, keys on entities , constraints etc… That is, the E-R model gives the clear picture about the database.

E-R modeling is a communication tool. It helps the data base designer to develop a good data base that meets the end users and application programmers. Especially, E-R modeling gives a pictorial representation of the database. Thus, the database designer can understand the data base description easily.

Therefore, unless the data base is modeled well, database cannot be developed well.

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Everything.It doesn't matter the information because there's always a way to plagiarize.No matter what the information, always, ALWAYS, cite the source.

Explanation:

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What is the name of the programming language created by Spu7Nix?
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1.For each of the following, give the name of an element from Period 4 (potassium to krypton), which matches the description.
Elements may be used once, more than once or not all.. Single line text.
(1 Point)
an element that reacts with water to produce a lilac flame

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Elements may be used once, more than once or not all.. Single line text.
(1 Point)
an element used as an inert atmosphere

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(1 Point)
an element that has a valency of 3

4.Write a balanced chemical equation for the reaction between potassium and water. (Non-anonymous question). .
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5.For each of the following, give the name of an element from Period 4 (potassium to krypton), which matches the description.
Elements may be used once, more than once or not all.. Single line text.
(1 Point)
an element with a fixed valency of 2 that not is not in group 2
8 0
3 years ago
Read 2 more answers
What is output by the following program?
zubka84 [21]

The output of the program is 10.

def mult(a, b = 1, c = 1):

    print(a * b * c)

mult(2, 5)

<h3>Code explanation:</h3>

The code is written in python.

  • A function is declared named "multi" and the function has parameter of a, b and c. The default value of b and c are 1.
  • Locally, we print the product of a, b and c.
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learn more on python here: brainly.com/question/22796383

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