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How does data get stored in SQL?

SQL Server data is stored in data files that, by default, have an .MDF extension. The log (. LDF) files are sequential files used by SQL Server to log transactions executed against the SQL Server instance (more on instances in a moment). 14 мая 2009 г.


How does SQL database store data?

Have you ever wondered how SQL server physically stores table data internally? Well, data in tables is stored in row and column format at the logical level, but physically it stores data in something called data pages. A data page is the fundamental unit of data storage in SQL Server and it is 8KB in size.

How does data get stored in SQL Server?

When you insert any data into a SQL Server database, it saves the data to a series of 8 KB pages inside the data file. If multiple data files exist within a filegroup, SQL Server allocates pages to all data files based on a round-robin mechanism.

How are records stored in SQL?

A record, also known as a row, is the smallest storage structure in a SQL Server data file. Each row in a table is stored as an individual record on disk. Not only table data is stored as records, but also indexes, metadata, database boot structures and so forth.

Where does SQL store its data?

SQL Server databases are stored in the file system in files. Files can be grouped into filegroups. For more information about files and filegroups, see Database Files and Filegroups. When people gain access to an instance of SQL Server they are identified as a login.

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