MySQL database provides a wonderful feature of
Autoincrement Column index. Your database table can define its primary key as Autoincrement number and MySQL will take care of its unique value while inserting new rows.Each time you add a new row, MySQL increments the value automatically and persist it to table. But sometime you may want ...
The effective usage of an index is always a big question. There are instances in production environments, where an index may help the performance of just a single query, while it can degrade the performance of a number of queries. Always the Optimizer can’t guarantee the best suitable index required for the query in an environment ...
The Primary Key(PK) constraint is the most basic concept of any RDBMS (I am particularly interested in Oracle). Yet, I have noticed people getting confused when it comes to the practical usage and asking questions like:- I have disabled PK and now oracle is doing full table scan. - How PK constraints and indexes are related/different? - How ...
Have you ever thought how does the search functionality is implemented in all the websites! Most of the internet blogs and websites are powered by MySQL database. MySQL provides a wonderful way (Full-text Search) of implementing a little search engine in your website. All you have to do is to have MySQL 4.x and above. MySQL ...
