Database system architecture refers to the design and arrangement of components and processes that make up a database system. It includes the structure of the database, the relationships between different components, and the overall framework for managing and accessing data.
Database system architecture typically consists of three main layers:
1. External level: This layer is closest to the end-users and includes the user interfaces and application programs that interact with the database. It allows users to interact with the database by submitting queries, updating data, and retrieving information.
2. Conceptual level: Also known as the logical level, this layer defines the logical structure and organization of the entire database. It includes the database schema, which describes the tables, relationships, and constraints, as well as the integrity rules and security measures.
3. Internal level: This layer deals with the physical implementation of the database on the storage media. It includes the file organization and indexing structures, access methods, and storage allocation mechanisms. It handles tasks such as data compression, data encryption, and data recovery.
The architecture may also include additional components like query optimization, concurrency control, and transaction management systems, depending on the specific requirements of the database system. Overall, the architecture aims to provide efficient and secure storage, retrieval, and manipulation of data within a database system.
What is Database system architecture ?
3 answers
yeppi
I'm glad you're happy! If you have any more questions or need further information, feel free to ask.
1 answer