SQLite does not have an inbuilt authentication mechanism. As the same time, MySQL also has more setup guides available to help with this. On the other hand, MySQL requires significantly more configuration as compared to SQLite. Security and Ease of SetupĪs alluded to in the previous section, SQLite requires little to no configuration, making it extremely easy to set up. For larger databases, this can be a time-consuming process.
Moreover, no configurations are required, and the process can be done using minimal support.īefore copying or exporting a MySQL database, you need to condense it into a single file. The SQLite library is about 250 KB in size, while the MySQL server is about 600 MB.
SQLite was designed and built with storage and portability in mind. Since you are probably more familiar with MySQL, this tutorial will list SQLite's most important features, as well as dissimilitudes to MySQL, all with the goal of steering you towards the product that will best suit your needs. Yet, beyond these similarities, the two databases are dissimilar in several important respects. Both are fast, cross-platform, robust, and feature-rich. SQLite and MySQL are equally popular open source Relational Database Management Systems (RDBMS). The "SET DEFAULT" actions are similar to "SET NULL", except that each of the child key columns is set to contain the columns default value instead of NULL.ĭeferred foreign key constraints are not checked until the transaction tries to COMMIT.What Is SQLite and How Does It Differ from MySQL? by Robert Gravelle
#Navicat for sqlite key update#
If the configured action is "SET NULL", then when a parent key is deleted (for ON DELETE SET NULL) or modified (for ON UPDATE SET NULL), the child key columns of all rows in the child table that mapped to the parent key are set to contain SQL NULL values. For an "ON UPDATE CASCADE" action, it means that the values stored in each dependent child key are modified to match the new parent key values.
For an "ON DELETE CASCADE" action, this means that each row in the child table that was associated with the deleted parent row is also deleted. The "RESTRICT" action means that the application is prohibited from deleting (for ON DELETE RESTRICT) or modifying (for ON UPDATE RESTRICT) a parent key when there exists one or more child keys mapped to it.Ĭonfiguring "NO ACTION" means just that: when a parent key is modified or deleted from the database, no special action is taken.Ī "CASCADE" action propagates the delete or update operation on the parent key to each dependent child key. The On Delete and On Update drop-down list define the type of the actions to be taken. To include field(s)/referenced field(s) to the key, just simply double-click the Fields/ Referenced Fields field or click to open the editor(s) for editing. Use the Referenced Table drop-down list to select a foreign table. Use the Name edit box to enter a name for the new key.
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