SQL Server Express

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Microsoft SQL Server Express
Developer(s) Microsoft
Stable release SQL Server 2014 Express / 2014
Development status Active
Written in C
Operating system Microsoft Windows
Platform IA-32 or IA-64
> 512 MB RAM
.NET Framework 4.0[1]
Available in English, Chinese, French, German, Italian, Japanese, Korean, Portuguese (Brazil), Russian, Spanish
Type Relational database management system
License Proprietary software[2]
Website www.microsoft.com

Microsoft SQL Server Express is a version of Microsoft's SQL Server relational database management system that is free to download, distribute and use. It comprises a database specifically targeted for embedded and smaller-scale applications. The product traces its roots to the Microsoft Database Engine (MSDE) product, which was shipped with SQL Server 2000. The "Express" branding has been used since the release of SQL Server 2005.

Capabilities[edit]

SQL Server Express provides many of the features of the paid, full versions of Microsoft SQL Server database management system. However it has technical restrictions that make it unsuitable for some large-scale deployments. Differences in the Express product include:

  • Maximum database size of 10 GB per database in SQL Server 2014, SQL Server 2012, and 2008 R2 Express[3] (4 GB for SQL Server 2008 Express and earlier; compared to 2 GB in the former MSDE). The limit applies per database (log files excluded); but in some scenarios users can access more data through the use of multiple interconnected databases.[citation needed]
  • No SQL Server Agent service[4][5]
  • Artificial hardware usage limits:
    • Single physical CPU, but multiple cores allowable[6]
    • 1 GB of RAM (runs on a system with higher RAM amount, but uses only at most 1 GB per instance of SQL Server Database Engine. "Recommended: Express Editions: 1 GB All other editions: At least 4 GB and should be increased as database size increases to ensure optimal performance."[7]).[8] Express with Advanced Services has a limit of 4 GB per instance of Reporting Services (not available on other Express variants). Analysis Services is not available for any Express variant.

Unlike the predecessor product, MSDE, the Express product does not include a concurrent workload-governor to "limit performance if the database engine receives more work than is typical of a small number of users."[9]

SQL Server Express includes several GUI tools for database management. These include:

The predecessor product MSDE generally lacked basic GUI management tools,[10]

Features available in SQL Server "Standard" and better editions but absent from SQL Server Express include:

Variants[edit]

Microsoft makes SQL Server Express available as:

  • An integrated edition with management tools
  • Core database-engine only
  • A SQL Server Express with Advanced Services edition (first introduced relatively late in Q2 2006 compared to the original release) with a reduced-functionality version of SQL Server Reporting Services and with full-text search capabilities

In the Free 2005 Express version, for example, a standard approach to installation options was provided, as follows. Generally, the SQL 2005 Express installers are packaged with the following consistent naming convention:

SQLEXPR.EXE
Has installers for BOTH 32-bit and 64-bit processors, but is a basic install
SQLEXPR32.EXE
Has ONLY the installer for 32-bit processors (still the basic install)
SQLEXPRWT.EXE
Has installers for BOTH 32-bit and 64-bit processors and SQL Server Management Studio Express (SSMSE) (2008 R2)
SQLEXPR_ADV.EXE
Has the basics and SQL Server Management Studio Express (SSMSE) + Reporting and Full Text Queries
SQLEXPR_TOOLKIT.EXE
Has the basics and SSMSE and Business Intelligence Development Studio (BIDS)

These optional variants have gone through several service packs (SP), and each SP installer can be used without using the older ones first:

  • Originals of the above files all carry the version number 9.0.1399.6
  • Service Pack 2 (SP2) versions all carry the version number 9.0.3042
  • Service Pack 3 (SP3) versions all carry the version number 9.00.4035
  • Service Pack 4 (SP4) versions all carry the version number 9.00.5000

Version history[edit]

Microsoft SQL Server Express Version History
Version Release date Mainstream Support End Date Extended Support End Date
SQL Server 2005 Express Edition 2005-11-07[11] 2011-04-12[12] 2016-04-12[12]
SQL Server 2008 Express 2009-02-08[13] 2014-07-08[14] 2019-07-09[14]
SQL Server 2008 R2 Express 2010-04-16[15] 2014-07-08[16] 2019-07-09[16]
SQL Server 2012 Express 2012-05-14[17] 2017-07-11[18] 2022-07-12[18]
SQL Server 2014 Express 2014-04-01[19] 2019-07-09[20] 2024-07-09[20]

See also[edit]

References[edit]

  1. ^ https://msdn.microsoft.com/en-us/library/ms143506%28v=sql.120%29.aspx
  2. ^ https://msdn.microsoft.com/en-us/library/ms143522%28v=sql.120%29.aspx
  3. ^ "Features Supported by the Editions of SQL Server 2008 R2". Retrieved 2010-06-22. 
  4. ^ "Compare Edition Features". 
  5. ^ "SQL Server Express with Advanced Services Features". Microsoft. Retrieved 28 March 2012. 
  6. ^ "How SQL Server 2005 Express Edition determines the CPU count and uses the CPUs during processing". MSDN. November 2008. Retrieved 2008-11-25. 
  7. ^ https://msdn.microsoft.com/en-us/library/ms143506(v=sql.120).aspx
  8. ^ https://msdn.microsoft.com/library/cc645993.aspx#CrossBoxScale
  9. ^ "The SQL Server 2000 Workload Governor". MSDN. January 2004. Retrieved 2007-01-15. 
  10. ^ "How do I Manage SQL Server". 
  11. ^ "Download Microsoft SQL Server 2005 Express Edition from Official Microsoft Download Center". Retrieved 26 December 2012. 
  12. ^ a b "Microsoft Support Lifecycle (SQL Server 2005)". Retrieved 26 December 2012. 
  13. ^ "Download Microsoft SQL Server 2008 Express from Official Microsoft Download Center". Retrieved 26 December 2012. 
  14. ^ a b "Microsoft Support Lifecycle (SQL Server 2008)". Retrieved 26 December 2012. 
  15. ^ "Download Microsoft SQL Server 2008 R2 - Express from Official Microsoft Download Center". Retrieved 26 December 2012. 
  16. ^ a b "Microsoft Support Lifecycle (SQL Server 2008 R2)". Retrieved 26 December 2012. 
  17. ^ "Download Microsoft® SQL Server® 2012 Express from Official Microsoft Download Center". Retrieved 26 December 2012. 
  18. ^ a b "Microsoft Support Lifecycle (SQL Server 2012)". Retrieved 26 December 2012. 
  19. ^ "Download Microsoft SQL Server 2014 Express". Retrieved 11 April 2014. 
  20. ^ a b "Microsoft Support Lifecycle (SQL Server 2014)". Retrieved 11 April 2014. 

External links[edit]