Databases in WordPress

Why do we need databases in WordPress? What can a database provide to us? WordPress databases are a very useful method of keeping data that is needed to manage a dynamic website and they became a standard. What do WordPress databases contain?

• List of website’s users and their preferences.
• Products catalog.
• Registry of all transactions.

PHP has a native support (a database engine called SQLite) to accommodate a large number of databases, among others: MySQL, Oracle, Microsoft SQL Server, Informix, Sybase.