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it is a standard language for storing, manipulating and retrieving data from databases.n Our SQL Tutorial will teach you how to use SQL in: MySQL, SQL Server, MS .NET, Hadoop, PHP, JQuery, CMS, Oracle, MySql, PostgreSQL and other languages . At the end of this chapter, you will be introduced to the classic way of accessing databases, in particular how databases are structured.
A database is a kind of data warehouse and a set of rules stored in it. This storage is used to store information. It can store arbitrary values, such as usernames, phone numbers, dates of birth, audio recordings, prices, addresses, and the like.
SQL's job is to extract the values ​​from this store and load them into the database. This seems like a very simple action, but it is not quite so. The following practical exercise will show you how to properly use Sql to retrieve values ​​from a database, i.e. to create and validate tables or queries.
To complete this practice, you need to close the text editor and open a browser on any computer. After that, do the following steps.
1. Select the database you need to complete the task. As a rule, this is MySQl, so we open the page:
 
2. Enter the name of our database in the search field and press "Enter". You will see a list of databases that are used to store data. Now choose one. This database will be provided with the name mySQL or cursorset. This page does not list other databases named mySqldb and cursoredl. If you already know the name of your base, see fig. 4.3.
3. To access the mySQldb file, click the Add button. The database you have selected will be presented on the page, see:
 4. Create an entry in the users.created_at table, specify the name of your database in the account field; to access this database, set the value specified in the user_id field. If you need to create a new user, substitute his name. Click next.
 If you want to create a new user under username or omgid, you can select this value.
 5. Repeat steps 2 and 3 with another database. Processed de16308cb2

SQL Programming rigday 💾