odiapraise2020
odiapraise2020 odiapraise2020
  • 01-06-2021
  • Computers and Technology
contestada

Explain the levels of data model​

Respuesta :

rahafebraheem
rahafebraheem rahafebraheem
  • 02-06-2021

Answer:

Data modeling occurs at three levels—physical, logical, and conceptual.

  • A physical model is a schema or framework for how data is physically stored in a database.

  • A conceptual model identifies the high-level, user view of data.

  • A logical data model sits between the physical and conceptual levels and allows for the logical representation of data to be separate from its physical storage.

Answer Link

Otras preguntas

What's the other term for: explosive or changing very quickly
How many moles of water (H2O) would be produced if 10 moles of O2 gas reacted completely with excess H2 gas?2 H2(g) + O2(g) → 2 H2O(g)A. 5 B. 10 C. 20 D. 30
What's the other term for: one who overindulges in food and drink
How do we use the Pythagoras theorem in "everyday life".
What's the other term for: explosive or changing very quickly
What's the other term for: one who overindulges in food and drink
I figured out the 1st question but I do not understand the second one...please show me step by step! Thank you!
A solution of hydrogen peroxide, H2O2, is titrated with potassium permanganate, KMnO4, according to the following equation: 5H2O2 + 2KMnO4 + 3H2SO4 = 5O2 + 2MnS
why dog pants during summer use the cocept of evaporation
write a system of equations and solvea class of 195 students went on a field trip. They took 7 vehicles,some cars and some buses. find the number of cars and nu