SQL
Views in MySQL Tutorial: Create, Join & Drop with Examples
What are views? VIEWS are virtual tables that do not store any data of their own but display data...
DBMS architecture helps in design, development, implementation, and maintenance of a database. A database stores critical information for a business. Selecting the correct Database Architecture helps in quick and secure access to this data.
The simplest of Database Architecture are 1 tier where the Client, Server, and Database all reside on the same machine. Anytime you install a DB in your system and access it to practise SQL queries it is 1 tier architecture. But such architecture is rarely used in production.
A two-tier architecture is a database architecture where
An application interface which is called ODBC (Open Database Connectivity) an API which allows the client-side program to call the DBMS. Today most of the DBMS offers ODBC drivers for their DBMS. 2 tier architecture provides added security to the DBMS as it is not exposed to the end user directly.
Example of Two-tier Architecture is a Contact Management System created using MS- Access.
In the above 2-teir architecture we can see that one server is connected with clients 1, 2m and 3. This architecture provides Direct and faster communication.
3-tier schema is an extension of the 2-tier architecture. 3-tier architecture has following layers
This DBMS architecture contains an Application layer between the user and the DBMS, which is responsible for communicating the user's request to the DBMS system and send the response from the DBMS to the user.
The application layer(business logic layer) also processes functional logic, constraint, and rules before passing data to the user or down to the DBMS
Three tier architecture is the most popular DBMS architecture.
The goal of Three-teir architecture is:
Example of Three-teir Architecture
Any large website on the internet, including guru99.com ??
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