Provided many database driver to connect with different different database.
When you switch from one database to another database, you need not to write all the code to connect with new database, just change the connection string and some query which are required for new database.
It provides prepare statement which is a kind of template of query which compiled only once and can be executed as many times as you want, by just changing the attributes which is called place-holder.
Easy and efficient General Operation like- Insert, update...etc.