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The ANSI-SPARC database architecture is the basis of most of the modern databases.
The three levels present in this architecture are Physical level, Conceptual level and External level.
This is the lowest level in the three level architecture. It is also known as the internal level. The physical level describes how data is actually stored in the database. In the lowest level, this data is stored in the external hard drives in the form of bits and at a little high level, it can be said that the data is stored in files and folders. The physical level also discusses compression and encryption techniques.
The conceptual level is at a higher level than the physical level. It is also known as the logical level. It describes how the database appears to the users conceptually and the relationships between various data tables. The conceptual level does not care for how the data in the database is actually stored.
This is the highest level in the three level architecture and closest to the user. It is also known as the view level. The external level only shows the relevant database content to the users in the form of views and hides the rest of the data. So different users can see the database as a different view as per their individual requirements.
FAQs
The ANSI-SPARC database architecture is the basis of most of the modern databases. The three levels present in this architecture are Physical level, Conceptual level and External level.
What is the 3 tier architecture of DBMS? ›
Three-tier architecture is a well-established software application architecture that organizes applications into three logical and physical computing tiers: the presentation tier, or user interface; the application tier, where data is processed; and the data tier, where application data is stored and managed.
What are the three 3 main phases of database design? ›
It involves a meticulous process that unfolds in three distinct phases: conceptual, logical, and physical database design. These levels of design are crucial in creating a database that not only captures the essence of the data but also ensures its integrity, efficiency, and security.
What are the three types of database system architecture in detail? ›
The three levels of database architecture in MongoDB Atlas
A three-tier application is composed of three layers: the data, the application, and the presentation. As you can see in this diagram, the three-tier architecture comprises the data, application, and presentation levels.
What are the three architecture of the database can be viewed as? ›
A database's architecture can be viewed as the three levels of abstraction that are named as the internal level, external level, and the conceptual level. Therefore the correct answer is C.
What is 2 and 3 tier architecture in DBMS? ›
The two-tier DB architecture is a client-server architecture. The three-tier DB architecture is a type of web-based application. It contains mainly two layers- the Data Tier (Database Tier), and the Client Tier. It mainly contains three layers- the Data Layer, the Business Layer, and the Client Layer.
What is 3 tier and n tier architecture in DBMS? ›
In 3 Tier Application there are three tiers like Presentation Layer , Application Layer and Data layer. Here the application layer contains business logic as well . On the other hand in N Tier Application layer is divided into 2 i.e. Application Layer and Business Logic layer.
What are the 3 components of database? ›
The five major components of a database are hardware, software, data, procedure, and database access language.
What are the 3 data models of database? ›
This will make the data more intuitive to search for your end users. There are 3 common types of data models: relational, hierarchical, and network database. In this article, we'll break down each one and explore the pros and cons, so you'll know when you should use each type to model your data.
What are the objectives of three level architecture? ›
The purpose of the three-level architecture is to separate the user from the physical database. The three levels consist of an internal level or schema, which describes the physical storage requirements and structure of the database.
A framework for managing access to data that involves three layers or schemas: the external or programming view, the conceptual or data administration view, and the internal or database administration view.
How many types of database architecture are there? ›
Types of DBMS Architecture
Database architecture can be seen as a single tier or multi-tier. But logically, database architecture is of two types like: 2-tier architecture and 3-tier architecture.
What is tier architecture in DBMS? ›
These architectures are defined according to tiers; that is, the number of levels in the DBMS's structure determines which category the DBMS architecture belongs to. A tier is a physical unit where a process or a program is executed. Database servers, application servers, clients, etc., are a few examples.
What is 3 tier system? ›
The three-tier system is a system in which the government is divided into three levels. • Central Government. • State Government. • Panchayati Raj and Municipalities. Central Government – The Central Government, handles the issues of the entire country.
Is MVC a 3-Tier architecture? ›
No, they are not the same. MVC is a design pattern for structuring user interface code. It could be used in a three-tier architecture, in which case the pattern would belongs in the user services layer.
What is the architecture of the DBMS? ›
DBMS Architecture helps users to get their requests done while connecting to the database. We choose database architecture depending on several factors like the size of the database, number of users, and relationships between the users.
