MariaDB Unique Index
- A unique index in MariaDB means that the values in a specified column or a group of columns are unique all over the table.
- Unlike a normal index, a unique index applies a constraint on the data, preventing the insertion of duplicate values(data).
- This improves data integrity and allows for improved querying or say fast run query.
- In MariaDB, a primary key is a UNIQUE index. If no primary key is explicitly defined for a table, a unique index is created on the columns designated as the primary key.
- Simply we can say a unique index will ensure that any of two rows of the same column in a table can’t have the same value.
- Let’s take some examples to understand it.
MariaDB Unique Index
MariaDB is a fast, scalable, open-source community-supported relational database management system that’s also an enhanced version of MySQL. Content management systems (CMS) are a key application of MariaDB. A CMS is a publication system through which web creators can push and manage large quantities of content on a website. In this article, we will understand the Unique Index in MariaDB along with its syntax, examples, and so on.
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