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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.
What else can I help you with?
What are the main theories of a relational database approach to storing and accessing data?
The main theories of a relational database approach include the relational model, which organizes data into tables with rows and columns; normalization, which reduces data redundancy and improves data integrity; and SQL (Structured Query Language), which is used to interact with the database for querying and manipulation of data. These theories aim to ensure data consistency, provide flexibility in querying data, and allow for scalability in managing large volumes of data.
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 categories in a three column organizer?
Here is a typical way to configure a three-column organizer for research:First column: Topic of the text or discussion.Second column: What you learned from reading the text, from research, or discussion.Third column: Your opinions, observations, thoughts, and experiences about the topic.
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.
Discuss Hilda taba's1962 curriculum development model?
Hilda Taba's curriculum development model, introduced in 1962, focuses on a systematic approach that involves three main stages: diagnosis, design, and evaluation. In the diagnosis phase, educators gather data to understand the learners' needs and current knowledge. The design phase involves creating learning experiences and activities based on the diagnosis. Lastly, the evaluation phase assesses the effectiveness of the curriculum in achieving its goals and objectives, leading to revisions and improvements as needed.
What are the Classification of data model?
Data models can be classified into three main categories: conceptual data model (high-level view of the data and its relationships), logical data model (detailed structure of the data and relationships), and physical data model (implementation of the database design on a specific database management system).
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)
What are four main categories of information used by most organizations?
The four main categories of information used by most organizations are financial data (e.g. budgets, sales figures), employee information (e.g. HR records, performance evaluations), customer data (e.g. preferences, buying behavior), and operational data (e.g. inventory levels, production metrics).
How many main categories are in WikiAnswers?
There are 22 Main Categories on WikiAnswers.
In what part of your speech should you discuss your main points and the evidence which supports them?
You should discuss your main points and the evidence that supports them in the body of your speech, typically after the introduction. This is where you provide detailed explanations, examples, and data to strengthen your arguments and persuade your audience.
What categories are there in food?
The main categories of food are:CarbohydratesFatsProteinsVitaminsMinerals
What two categories can research be divided into?
Research can be divided into two main categories: qualitative research, which focuses on understanding the "why" and "how" behind phenomena through qualitative data analysis; and quantitative research, which focuses on collecting and analyzing numerical data to answer research questions through statistical methods.
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.
