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Database architecture is the design, development, implementation and maintenance of computer programs that store and organize information for users and businesses.

Types of Database Structure:

What is 1-tier Architecture?
1-tier architecture is a Databases architecture whereby the DBMS is the only entity where the user directly sits on the DBMS and uses it. Any changes made here will directly be made on the DBMS itself. It does not offer handy tools for end-users. Database designers and programmers generally prefer to use single-tier architecture.

What is 2-tier Architecture?
2-tier architecture is a type of Database architecture whereby an application is used to access the DBMS. The application in 2-tier architecture is completely independent of the database in terms of design, 
operation, and programming.

What is 3-tier Architecture?
3-tier architecture splits its tiers from each other based on the difficulty of the users and how they make use of the data present in the database. The tiers of 3-tier architecture: 
Database (Data) Tier, Application (Middle) Tier, User (Presentation) Tier.

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