Sql vs sqlite4/29/2023 ![]() You can even omit the data type altogether, something no other database allows. When creating a table, you can specify ANSI data type (VARCHAR, INT, etc.), and SQLite will allow it (considering it will generally save anything in a table anyway). SQLite internally uses just 4 data types: INTEGER, REAL, TEXT, and BLOB. SQLite is very limited in data types, which usually isn't a problem as it isn't designed to store vast amounts of data. MySQL has rich data type support, allowing fine-tuning for optimal space and performance. The default storage engine is InnoDB, a performant transactional engine. Storing seldom-used data can be done using the Archive storage engine, with very fast writes and automatic compression of data. For short-lived intermediate tables, you can use the even faster Memory engine. For example, you don't need transactions when writing log items, and you can use the high-speed MyISAM engine. One of the strengths of MySQL is the ability to optimize storage and access per table by using different storage engines for tables with specific access patterns. However, MariaDB still didn't reach even 10% of MySQL's market share. People who don't want to have any ties with Oracle can switch to MariaDB, which is almost fully compatible with MySQL. This leads to Monty leaving Sun and forking MySQL into MariaDB. When Monty Widenius sold MySQL to Sun Microsystems in 2008, he didn't anticipate Oracle buying Sun and getting complete control over MySQL2 years later. It was fast and straightforward out of the box for most applications. MySQL is an open-source database that originated back in 1995. Nowadays, one can use the strict option when creating tables to disable flexible typing - we had to rely on checking constraints before. Historically, SQLite was a TCL extension, and writing data of variables without caring about the variable type was very useful. For example, you can have a table column named salary and write a number in one row, text in another, binary data in the third one. You can write data of varying types in the same column. SQLite has an unusual feature - flexible typing. Today, applications are often multithreaded, and care needs to be taken to avoid writing from various threads at the same time to prevent SQLite throwing errors that database is locked. SQLite locks the whole database for writing, so the performance of multiple writers is pretty bad as writes are performed sequentially. This means if you share the database with several applications and all of them change data, there will be a lot of waiting. However, SQLite writes data by a single application at a time. Very fast when reading data, the database can be simultaneously read by many applications with no locking. SQLite is not a toy database, but it is straightforward. This approach allows for significant performance gains as no network calls or data are copied from one application to another. SQLite is used by applications having its driver integral part of the application. ![]() ![]() SQLite is an embedded database, while MySQL is a more common client/server database. There is a significant difference in the way SQLite and MySQL are designed. Even though Oracle is officially the most popular database, one can argue that more people use SQLite. On the other hand, SQLite is an integral part of all phones and browsers. MySQL is currently #2 on the DB Engines ranking chart and close to #1. SQLite and MySQL are both among the most popular databases in the world.
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