To respond to this question, it is necessary to first comprehend what a relational database is and the specifications that it must adhere to.
In this article, we will explore the features of SQLite and determine whether it is a relational database management system.
What is a Relational Database Management System?
Data is kept in relational databases in tables made up of rows and columns. Through shared data properties, tables can connect and create a network of relationships. To guarantee consistency, accuracy, and reliability, the relational model places specific requirements on the data. These characteristics are sometimes known as ACID qualities and include atomicity, consistency, isolation, and durability.
Does SQLite Meet the Properties of RDBMS?
SQLite meets these properties and can, therefore be considered a true RDBMS.
1: Recovers from Errors
When a transaction is performed, SQLite ensures that all changes are fully committed or fully rolled back. If a transaction is aborted due to an error or interruption, SQLite restores the database to its previous state. This enables applications to recover from errors or crashes without corrupting data.
2: Referential Integrity
SQLite also supports referential integrity and foreign key constraints, which are key features of the relational model. Referential integrity ensures that child tables have valid references to parent tables, while foreign key constraints ensure that only valid data can be inserted into related tables. These features help prevent data inconsistencies and ensure the integrity of the database.
3: Complex Queries
SQLite supports a wide range of SQL features, including complex queries, mathematical and string functions, and aggregate functions. It also provides support for triggers, stored procedures, and views, enabling developers to design more advanced applications and automate tasks.
4: Compliance with SQL Standards
Another argument in favor of SQLite being a true RDBMS is its compliance with SQL standards. The SQL language is the universal language for managing relational databases. SQLite implements many of the SQL-92 standards and some of the SQL-99 and SQL-2003 standards. This allows developers to use a wide range of tools and applications that understand SQL syntax and can communicate with SQLite databases.
Limitations to SQLite’s Implementation of the Relational Model
However, there are some limitations to SQLite’s implementation of the relational model. One of the most notable is its lack of support for concurrent transactions. SQLite only allows one write transaction at a time, which can lead to delays and performance issues in multi-user environments.
Additionally, SQLite’s data storage capacity is limited compared to other RDBMSs – which may impact its suitability for large, complex applications.
Despite these limitations, SQLite still meets the criteria for being considered a true RDBMS. Its compliance with ACID properties, referential integrity, SQL standards, and support for complex queries and automated tasks confirm its status as an RDBMS.
Conclusion
SQLite can be considered a true RDBMS as it meets the key requirements of the relational model, including ACID properties, referential integrity, and SQL compliance despite its limitations. Its lightweight and self-contained nature makes it an excellent choice for embedded systems and small-scale applications, while its ease of use and configuration make it popular with individual developers.
