10 Questions on MariaDB architecture.

 1. Question: What is MariaDB?

   - Answer: MariaDB is an open-source relational database management system (RDBMS) that is a fork of MySQL. It is developed by the original creators of MySQL and designed to be highly compatible with MySQL while incorporating new features.

 

2. Question: How is MariaDB related to MySQL?

   - Answer: MariaDB is a fork of MySQL, created by the original developers of MySQL after concerns over the acquisition of MySQL by Oracle. MariaDB aims to maintain compatibility with MySQL while also introducing new features and enhancements.

 

3. Question: Explain the architecture of MariaDB.

   - Answer: The architecture of MariaDB is similar to that of MySQL. It includes a server component, storage engines, query optimization, and the ability to connect through various client interfaces. MariaDB supports a plugin architecture for storage engines and features like the Aria storage engine, which is the default storage engine.

 

4. Question: What are the storage engines supported by MariaDB?

   - Answer: MariaDB supports various storage engines, including InnoDB (default), Aria, TokuDB, MyRocks, and others. Each storage engine has its own characteristics and is optimized for different use cases.

 

5. Question: Explain the role of the MariaDB Server.

   - Answer: The MariaDB Server is the core component responsible for managing databases, processing queries, and handling client connections. It includes components such as the query optimizer, execution engine, and storage engine interface.

 

6. Question: How does MariaDB handle transactions and ACID properties?

   - Answer: MariaDB supports transactions and adheres to the principles of ACID (Atomicity, Consistency, Isolation, Durability). It provides features like the `BEGIN`, `COMMIT`, and `ROLLBACK` statements to control transaction behavior.

 

7. Question: What is the purpose of the MariaDB Query Optimizer?

   - Answer: The MariaDB Query Optimizer analyzes SQL queries and generates efficient execution plans. It considers factors such as indexes, statistics, and available resources to optimize the query execution.

 

8. Question: Explain the concept of MariaDB Galera Cluster.

   - Answer: MariaDB Galera Cluster is a synchronous multi-master clustering solution for MariaDB. It allows multiple MariaDB nodes to work together as a single cluster, providing high availability and load balancing.

 

9. Question: How does MariaDB handle user authentication and authorization?

   - Answer: MariaDB uses a username/password-based authentication system. User privileges are managed through the `GRANT` and `REVOKE` statements, allowing administrators to control access to databases, tables, and other objects.

 

10. Question: What is the significance of the MariaDB Data Dictionary?

    - Answer: The MariaDB Data Dictionary is a centralized repository that stores metadata about databases, tables, columns, and other objects in MariaDB. It provides a consistent way to access and manage metadata, simplifying database administration tasks.

 

These questions provide a basic understanding of the MariaDB Database architecture and its key features.