In this tutorial, we will step through installing PostgreSQL, connecting to the database, loading some data, and running a variety of SQL queries. To cap it all off, we’ll execute a query ...

Learn how to structure a database, how to author SQL statements and clauses, how to master MySQL and PostgreSQL, and more in this set of online courses.

Databases using a command system separate from SQL are often collectively referred to as NoSQL database systems, sometimes said to stand for "not only SQL," and it can logically take a longer ...

In the Restore Database window, select the database and the backup sets to restore, and press OK. How to Restore a Backup Using T-SQL Alternatively, you can use the T-SQL commands to restore a ...

An SQL Server-scheduled job can run database commands or it can run Microsoft Windows commands in standard executable program files or in the PowerShell scripting language.

Using DBCC CHECKDB for SQL Database Repair REPAIR_ALLOW_DATA_LOSS argument with CHECKDB must be used only in an emergency and as the last option. It can fix errors that involve deallocating a row or ...

Basically, the Database Consistency Checker (DBCC) provides a set of commands (many of which are undocumented) to maintain databases — maintenance, validation, and status checks.

SQL has dominated data querying for decades. Newer query languages offer more elegance, simplicity, and flexibility for modern use cases.

Whether you're running a LAMP stack on Ubuntu or CentOS, you need to back up your MySQL databases. Learn how to do this with the help of the mysqldump command.