SQL Server Backup and its types with example

SQL Server backup is the process of creating a copy of the database and its related components to protect against data loss and ensure data availability in case of system failure, hardware failure, or any other type of disaster. 

The following are the different types of SQL Server backups:

Full Backup: It is a backup of the entire database and includes data, transaction logs, and other metadata.

Example-

BACKUP DATABASE [Harsh] TO  DISK = N'C:\Harsh.bak' 

Differential Backup: It is a backup of only the changes made to the database since the last full backup.

Example-

BACKUP DATABASE [Harsh] TO  DISK = N'C:\Harsh_diff.bak' WITH DIFFERENTIAL

Transaction Log Backup: It is a backup of the transaction logs, which keeps a record of all the transactions that have taken place in the database.

Example-

BACKUP LOG [Harsh] TO  DISK = N'C:\Harsh_log.bak'

Note - It's important to regularly backup your SQL Server database to ensure its availability in case of a disaster.


Comments

Post a Comment

Popular posts from this blog

How data is replicated from the Primary Replica to the Secondary Replica in a SQL Server Always On Availability Group

Image
When it comes to high availability in SQL Server, Always On Availability Groups offer a robust solution for ensuring data resilience and fault tolerance. At the heart of this technology is a sophisticated log-based replication mechanism distinct from traditional database mirroring or snapshot replication. Let’s walk through exactly how data moves from the Primary Replica to the Secondary Replica, step by step. High-Level Process Flow  Primary Replica → Log Generation → Log Transport → Log Reception → Redo → Acknowledgement. Step-by-Step Explanation 1. Client Writes Data to Primary Replica * A client application sends a transaction (e.g., INSERT, UPDATE) to the Primary Replica. * SQL Server writes this transaction to the transaction log of the primary database. * This log write is made to the log buffer and flushed to disk before the transaction is considered committed. 2. Log Block is Captured by the Always On Transport Manager * The HADR_LOG_SEND_MANAGER process monitors the trans...
Read more

Accelerated Database Recovery (ADR) in SQL Server

Image
Accelerated Database Recovery (ADR) is one of the most transformative features in recent SQL Server releases, and with SQL Server 2025, it’s more powerful and flexible than ever. ADR is a SQL Server feature designed to drastically improve database availability by reengineering the recovery process. Traditional recovery could take a long time, especially with long-running transactions, because SQL Server had to scan the transaction log from the oldest uncommitted transaction. ADR changes this by introducing a new architecture that makes recovery and rollback nearly instantaneous, regardless of transaction length or database activity. Key Benefits : Fast and consistent recovery : Recovery time is no longer affected by the number or size of active transactions. Instantaneous rollback : Even very long-running transactions can be rolled back instantly. Aggressive log truncation : The transaction log is truncated more aggressively, preventing log growth even with active long transactions. H...
Read more

COPILOT Feature in SQL Server 2025

Image
 Copilot Feature in SQL Server 2025: A Game-Changer for Database Management As organizations continue to embrace digital transformation, the demand for smarter, more efficient database management tools is growing. Enter SQL Server 2025, Microsoft's latest iteration of its flagship database system, which introduces a revolutionary feature—Copilot. Powered by advanced AI capabilities, Copilot is set to redefine how database administrators (DBAs) and developers interact with SQL Server. What is Copilot in SQL Server 2025? Copilot is an AI-powered assistant integrated into SQL Server 2025. Designed to augment productivity, it leverages natural language processing (NLP) and machine learning (ML) to assist users in managing databases, writing queries, optimizing performance, and ensuring data security. Built on Microsoft's Azure OpenAI service, Copilot brings intelligence directly into the SQL Server ecosystem. Key Features of Copilot Natural Language Querying : Users can write quer...
Read more