AlwaysOn与Windows Server故障转移群集技术集成,提供更具弹性的高可用性平台。 尽管群集在实例级别上工作,但AlwaysOn在数据库级别配置。 AlwaysOn可用性组是SQL Server 2012中引入的新技术,用于将预定义的数据库组复制到AlwaysOn中已知的一组只读伙伴实例或副本。多个节点各自托管一个AlwaysOn数据库的同步副本,并且最好...
欢迎来到“SQL Server AlwaysOn的阶梯”系列的第一个级别。在这篇1级文章中,我们将发现“AlwaysOn”,“故障转移群集实例”(FCI)和“Windows Server故障转移群集”...
An availability database is sometimes called a database replica in Transact-SQL, PowerShell, and SQL Server Management Objects (SMO) names. For example, the term "database replica" is used in the names of the Always On dynamic management views that return informat...
For example, the term "database replica" is used in the names of the Always On dynamic management views that return information about availability databases: sys.dm_hadr_database_replica_states and sys.dm_hadr_database_replica_cluster_states. However, in SQL Server Books O...
In this article Overview SQL Server 2025 changes Version and edition requirements Usage scenarios Show 3 more Applies to: SQL Server A distributed availability group (AG) is a special type of availability group that spans two separate availability groups. Distributed availability groups are ...
Support for SQL Server 2017 on Windows and Linux is in public preview and shouldn't be used for production migrations. Support for conversion of Sybase functions. SSMA v7.5 The v7.5 release of SSMA for SAP ASE (formerly SSMA for Sybase) contains the following changes: Several improvements to...
Has columnstore index enhancements for sorting and Always On Availability Group support. New security features: Always Encrypted: When enabled, only the application that has the encryption key can access the encrypted sensitive data in the SQL Server 2016 database. The key is never passed to SQL...
Has columnstore index enhancements for sorting and Always On Availability Group support. New security features: Always Encrypted: When enabled, only the application that has the encryption key can access the encrypted sensitive data in the SQL Server 2016 database. The key is never passed to SQL...
In-band SQLi “Regular” SQL injection is also called in-band SQLi because the attacker is able to receive results in the same way they performed the attack itself. A typical example would be to submit a web form with an SQLi payload and then see the returned database records on the sam...
Structured Query Language (SQL) is the unifying thread in the complex tapestry of database management. It is the common language spoken by various database systems, including SQL Server, MySQL, Oracle, and MS SQL Server. SQL is the bridge between data and the people who need it. ...