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|Name:||SQL Server 2014||Version:||Standard|
|Software Platf:||Multi-platform||Company:||Microsoft Corporation, USA|
|Classification:||Standard Language For Relational Database Management Systems||Last Updated:||In 2014|
MS SQL Server 2014 Online Key,
Business MS SQL Server 2014
The SQL Server family of software is a relational database management system from Microsoft Corporation. At a press conference in San Francisco on April 16, 2014, Microsoft CEO Satya Nadella announced the official launch of SQL Server 2014.
SQL Server 2014 version provides enterprises with in-memory enhancement technology, the key technology for enterprises to control massive data, the built-in In-Memory technology can integrate various data structures in the cloud, its fast computing performance and high data compression technology, can help customers accelerate business and switch to a new application environment.
Through integration with Excel and Power BI for Office 365, SQL Server 2014 provides business intelligence functions that allow business personnel to independently make real-time decision analysis of data, easily helping employees use familiar tools to convert surrounding information into environmental intelligence, and exert greater operational value of resources, thereby improving enterprise productivity and flexibility.
In addition, SQL Server 2014 enables new hybrid cloud solutions that take full advantage of the benefits of cloud computing, such as cloud backup and disaster recovery.
1. Memory technology improvement
The most interesting feature of SQL Server 2014 is the in-memory online transaction processing (OLTP) engine, codenamed "Hekaton" in the project. In-memory OLTP is integrated into SQL Server's core database management components, requiring no special hardware or software to seamlessly integrate existing transaction processes. Once a table is declared as memory-optimized, the in-memory OLTP engine manages the table and saves the data in memory. When they need additional table data, they can use queries to access the data. In fact, a query references both memory-optimized and regular tables.
Another aspect of SQL Server 2014's enhanced memory-related features is the ability to extend the SQL Server memory buffer pool to solid-state drives (SSDs) or SSD arrays. Expanding the buffer pool enables faster paging, but reduces data risk because only groomed pages are stored on the SSD. This is particularly beneficial for OLTP operations that support heavy read loads. LSI Nytro Flash cards work with the latest SQL Server 2014 to reduce latency, improve throughput and reliability, and eliminate IO bottlenecks.
In SQL Server 2014, the columnstore indexing feature has also been updated. Columnstore indexes were originally introduced in SQL Server 2012 to support highly aggregated data warehouse queries. Based on xVelocity storage technology, these indexes store data in a columnar format while leveraging xVelocity's memory management capabilities and advanced compression algorithms. However, columnstore indexes for SQL Server 2012 cannot use clustering and cannot be updated.
SQL Server 2014 introduces another columnstore index that supports both clustering and updates. In addition, it supports more efficient data compression, allowing more data to be saved to memory to reduce expensive I/O operations.
2. Cloud integration
Microsoft has always positioned SQL Server 2014 as a hybrid cloud platform, which means SQL Server databases are easier to integrate with Windows Azure. For example, starting with SQL Server 2012 Cumulative Update 2, you will be able to back up databases to the Windows Azure BLOB storage service. SQL Server 2014 introduces the concept of Smart Backups, where SQL Server will automatically decide whether to perform a full or differential backup, and when. SQL Server 2014 also allows data and log files from on-premises databases to be stored on Azure Storage. In addition, SQL Server Management Studio provides a deployment wizard that helps you easily migrate your existing on-premises databases to Azure virtual machines.
SQL Server 2014 also adds a feature that allows Azure virtual machines to be used as an Always On Availability Group replica. The Availability Groups feature, originally introduced in SQL Server 2012, provides failback services that support highly available databases. It consists of 1 primary replica and 1~4 secondary replicas (SQL Server 2014 increased to 8). The primary replica can run one or more databases; A secondary replica contains multiple database copies. Windows Azure infrastructure services support the use of availability groups in Azure virtual machines running SQL Server. This means that you use a virtual machine as a secondary replica and then support automatic failback.
SQL Server utility objects
The following table specifies the maximum size and maximum number of various objects tested in SQL Server Utility.
|SQL Server utility objects||Maximum size/number SQL Server (32-bit)||Maximum size/number SQL Server (64-bit)|
|Computers per SQL Server utility (physical or virtual)||100||100|
|The number of instances of SQL Server per computer||5||5|
|Total number of SQL Server instances per SQL Server utility||2001||2001|
|Number of user databases per SQL Server instance (including data-tier applications)||50||50|
|Total number of user databases per SQL Server utility||1,000||1,000|
|The number of filegroups per database||1||1|
|The number of data files per filegroup||1||1|
|The number of log files per database||1||1|
|The number of volumes per computer||3||3|
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