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Conceptual(high-level, semantic ) data models:
Provide concepts that are close to the way many user perceive data.
Physical(low -level, internal) data models:
Provide concepts that describe details of how data is stored in the computer.
Implementation(representational) data models:
Provide concepts that fall between the above two, used by many commercial DBMS Implementation.
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Discuss the main tenets of the dependency theory and analyze its analytical relevancy to developing countries?
QUESTION Discuss the main tenets of the dependency theory and anlyse its analytical relevancy to developing countries QUESTION Discuss the main tenets of the dependency theory and anlyse its analytical relevancy to developing countries
What are the main theories of a relational database approach to storing and accessing data?
A relational database stores and acceses data in the form of related table.
When you outline your research essay what do you use as the basis of your topic sentence?
You use what you'll be exploring in each paragraph. The importance of the topic sentence is make the essay flow so it should link to your contention in the introduction The sentences are based on the areas or categories into which you grouped your data. Before you write a paper you should decide what your main idea is, and come up with at least three things that you are going to talk about in order to support that main idea. You can make that into a 3-point thesis statement. These 3 points will be your topics.
What does Gestalt theory emphasize?
The main aspect of the Gestalt theory deals with how humans perceive auditory or visual stimuli, and how we group them into categories. There are many instances of this processing, one being similarity where we group objects that are alike in some way. Another is continuity, where lines or points are viewed so that they form a continuous path. There is also the law of closure where humans can see objects when the whole form is not there, like a connect the dots puzzle.
What are the main Sources of learning?
The main sources of ones education are family, school, and the community.
What are data models in dbms?
A data model is a collection of concepts that can be used to describe the structure of a database. Data models can be broadly distinguished into 3 main categories- 1)high-level or conceptual data models (based on entities & relationships) It provides concepts that are close to the way many users perceive data. 2)lowlevel or physical data models It provides concepts that describe the details of how data is stored in the computer. These concepts are meant for computer specialist, not for typical end users. 3)representational or implementation data models (record-based,object-oriented) It provide concepts that can be understood by end users. These hide some details of data storage but can be implemented on a computer system directly.
What are the different data model in DBMS?
"A data model is a collection of concepts that can be used to describe the structure of a database." Data models can be broadly distinguished into 3 main categories- 1)high-level or conceptual data models (based on entities & relationships) - It provides concepts that are close to the way many users perceive data. 2)lowlevel or physical data models - It provides concepts that describe the details of how data is stored in the computer.These concepts are meant for computer specialist, not for typical end users. 3)representational or implementation data models (record-based,object- 0riented) - It provide concepts that can be understood by end users. These hide some details of data storage but can be implemented on a computer system directly.
Advantages of flat data model?
two main early navigational data models were the hierarchical model and the CODASYL model (network model)
How many main categories are in WikiAnswers?
There are 22 Main Categories on WikiAnswers.
What categories are there in food?
The main categories of food are:CarbohydratesFatsProteinsVitaminsMinerals
Why do they call it quantitative data why not a number chart?
It is one of two main categories of data (quantitative and qualitative). These terms, have evolved for reasons of succinctness (brevity and clarity). This is why scientists say matter or material, instead of stuff.
There are three main categories of fashion?
The three main categories of fashion are haute couture,ready-to-wear and mass market.
What is the main difference between these two categories?
You haven't stated any categories.
Discuss the government?
discuss the government,currency,andeconomy in china
High-level conceptual data models provide concepts for presenting data in ways that are close to the way people perceive data. A typical example is the entity relationship model, which uses main concepts like entities, attributes and relationships?
[object Object]
What is the main type of computers?
The three main categories are: * Viruses * Worms * And Trojans
How does the UCR surveys crimes?
The Uniform crime report takes data from every police station in the United States. It divides the crimes into different categories, the two main categories being violent and property crime. It takes the data nad the population of the place it si from, and comes up with a crime rate which can compare small towns to large cities.
