What is data file and log file in SQL Server?

Contents

What is SQL log?
What is log file in database?
What is LDF and MDF file in SQL Server?
What is .DB file in SQL?

SQL Server stores data using two file extensions: MDF files are the data files that hold the data and objects such as tables, indexes, stored procedures and views. LDF files are the transaction log files that record all transactions and the database modifications made by each transaction.

What is SQL log?

SQL Server LOG() Function The LOG() function returns the natural logarithm of a specified number, or the logarithm of the number to the specified base. From SQL Server 2012, you can also change the base of the logarithm to another value by using the optional base parameter.

What is log file in database?

A log file is a computer-generated data file that contains information about usage patterns, activities, and operations within an operating system, application, server or another device.

What is LDF and MDF file in SQL Server?

MDF stands for Main Database File and contains all the information in a database. LDF records all the transactions and changes to the database. The ldf is critical for disaster recovery.

What is .DB file in SQL?

db files are standalone files, which means they don't need server to work, which also means you can't open it with SQL Server 2008. More more info check THIS LINK. Follow this answer to receive notifications.

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