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Mysql querious how to#

WordPress stores blog posts in the wp_posts table and users in the wp_users table. To finish out this relational concept, let’s make it specific to WordPress… For example, the database for the WordPress site below has 44 separate tables! An example of different tables in MySQL If you’ve ever looked at your WordPress site’s database, you’ll see that it uses this relational model, with all of your data divided into separate tables.īy default, WordPress uses 12 separate tables, but many WordPress plugins will also add their own tables. Instead, you’d use something 100% unique, like a numerical ID number. It’s important to note that a key is not the customer’s name. Using something called a “key”, you’re able to link the data from these two tables together so that you can manipulate and combine the data in different tables as needed. That’s where the relational part comes in. However, you’d probably also want to be able to say “show me all the orders for John Doe”. To solve those problems, a relational database would use one separate table for customers, and another separate table for orders. No organization – how do you reliably connect order information to customer information?.Duplicate data – each customer has a name, and each order also has the name of a customer.

Different data – the data that you need to collect for an order is different than that for a customer.

If you tried to lump all that data together into one big pot, you’d have a few problems like:

Orders – like which products were purchased, the price, who made the order, etc.

Customers – their name, address, details, etc.

With a relational database, your data is broken up into multiple separate storage areas – called tables – rather than throwing everything together into one big storage unit.įor example, let’s say you want to store two types of information: MySQL opts for an approach called a relational database. When it comes to storing data in a database, there are different approaches that you can use. In order to understand how MySQL works, it’s important to know two connected concepts: The name comes from putting together “My” – the name of the co-founder’s daughter – with SQL – the abbreviation of Structured Query Language, which is a programming language that helps you access and manage data in a relational database. While Oracle is in charge now, MySQL is still open source software, which means that you can freely use and modify it. Since then, it’s gone through a couple of changes in ownership/stewardship, before ending up at the Oracle Corporation in 2010. MySQL was originally launched all the way back in 1995. Let’s get a little deeper into the question now.

Mysql querious how to#

Suggested reading: How to Fix the “MySQL Server Has Gone Away” Error in WordPress and How to Fix the MySQL 1064 Error. MySQL is just one popular system that can store and manage that data for you, and it’s an especially popular database solution for WordPress sites. For a WordPress site, that “data” is stuff like the text of your blog posts, information for all the registered users at your site, autoloaded data, important settings configurations, etc. That’s the short, one sentence answer to the question of “what is MySQL”, but let’s break that down into terms that are a little more human-friendly.Ī database is just a structured collection of data that’s organized for easy use and retrieval. MySQL is an open source SQL relational database management system that’s developed and supported by Oracle.