Windows SQL Sever of relational database management system developed by .

Windows SQL Server Background:

1. SQL Server is a relational database management system from Corporation. It is easy to use, scalable, and highly integrated with related software, and can be used across a variety of platforms, from lapto running Windows 98 to large, multiprocessor servers running Windows 2012.
2. SQL Server is a comprehensive database platform that provides enterprise-grade data management using integrated business intelligence (BI) tools. The SQL Server Database Engine provides more secure and reliable storage for relational and structured data, enabling you to build and manage highly available and high-performance data applications for your business.
3. SQL Server is a relational database management system. Originally developed by , Sybase, and Ashton-Tate, the first OS/2 version was introduced in 1988. After the launch of Windows NT, and Sybase parted ways in the development of SQL Server, and ported SQL Server to Windows NT systems, focusing on the development and promotion of Windows NT versions of SQL Server. Sybase is more focused on the use of SQL Server on UNIX.

Windows SQL Server Summary:

• SQL Server is defined as a relational database management system (RDBMS) developed by .
• T-SQL means Transact-SQL, a propriety Language by .
• and Sybase released version 1.0 in 1989.
• Various Editions of SQL Server are Enterprise, Standard, Web, Developer, and Express.
• Critical components of SQL Server are Database Engine, SQL Server, SQL Server Agent, SQL Server Browser, SQL Server Full-Text Search, etc.
• You can run multiple instances of SQL Server the same on the same machine.

Key Components and Services of Windows SQL Server:

1. Database Engine: This component handle storage, Rapid transaction Processing, and Securing Data.
2. SQL Server: This service starts, sto, pauses, and continues an instance of SQL Server. Executable name is sqlservr.exe.
3. SQL Server Agent: It performs the role of Task Scheduler. It can be triggered by any event or as per demand. Executable name is sqlagent.exe.
4. SQL Server Browser: This listens to the incoming request and connects to the desired SQL server instance. Executable name is sqlbrowser.exe.
5. SQL Server Full-Text Search: This lets user running full-text queries against Character data in SQL Tables.Executable name is fdlauncher.exe.
6. SQL Server VSS Writer: This allows backup and restoration of data files when the SQL server is not running.Executable name is sqlwriter.exe.
7. SQL Server Analysis Services (SSAS): Provide Data analysis, Data mining and Machine Learning capabilities. SQL server is integrated with R and Python language for advanced analytics. Executable name is msmdsrv.exe.
8. SQL Server Reporting Services (SSRS): Provides reporting features and decision-making capabilities. It includes integration with Hadoop. Executable name is ReportingServicesService.exe.
9. SQL Server Integration Services (SSIS): Provided Extract-Transform and Load capabilities of the different type of data from one source to another. It can be view as converting raw information into useful information. Executable name is MsDtsSrvr.exe.

Importance of Windows SQL ServerInstances:

The following are the advantages of Windows SQL Server instances:

• 1. For installation of different versions on one machine
• You can have different versions of Windows SQL Server on a single machine. Each installation works independently from the other installations.
• 2. For cost reduction
• Instances can help us reduce the costs of operating Windows SQL Server, especially in purchasing the SQL Server license. You can get different services from different instances, hence no need for purchasing one license for all services.
• 3. For maintenance of development, production and test environments separately
• This is the main benefit of having many SQL Server instances on a single machine. You can use different instances for development, production and test purposes.
• 4. For reducing temporary database problems
• When you have all services running on a single SQL Server instance, there are high chances of having problems with the problems, especially problems that keep on recurring. When such services are run on different instances, you can avoid having such problems.
• 5. For separating security privileges
• When different services are running on different SQL Server instances, you can focus on securing the instance running the most sensitive service.
• 6. For maintaining a standby server
• A SQL Server instance can fail, leading to an outage of services. This explains the importance of having a standby server to be brought in if the current server fails. This can easily be achieved using SQL Server instances.

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