DBMSiga

DBMSiga is a fictional database management system used in this article to illustrate features commonly found in modern relational DBMS. It is described as cross-platform, modular, and capable of handling transactional workloads, analytical queries, and semi-structured data. The system emphasizes compatibility with the SQL standard while offering extensible features for JSON documents and user-defined functions.

DBMSiga employs a layered architecture with a pluggable storage engine, a cost-based query planner, and an execution engine that can run on multi-core servers. It supports multi-version concurrency control to enable concurrent reads and writes without locking the entire table. The data model centers on relational tables but includes native support for JSON data and index types such as B-tree and hash indices.

In terms of reliability, DBMSiga provides ACID-compliant transactions, write-ahead logging, and point-in-time recovery. It offers replication options for redundancy, including synchronous and asynchronous modes, along with a backup and restore facility. Security features include authentication, role-based access control, TLS for client connections, and encryption at rest for data files.

Administration and ecosystem features include a command-line interface, a SQL client, and drivers for common programming languages. It is described as having a permissive open-source license and a growing ecosystem of extensions and connectors, though as a fictional product it has no official release or production support. DBMSiga is often used in educational and comparative discussions of database architecture and performance.