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SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
Microsoft SQL Server (Structured Query Language) is a proprietary relational database management system developed by Microsoft.As a database server, it is a software product with the primary function of storing and retrieving data as requested by other software applications—which may run either on the same computer or on another computer across a network (including the Internet).
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.
A distributed SQL database is a single relational database which replicates data across multiple servers. Distributed SQL databases are strongly consistent and most support consistency across racks, data centers, and wide area networks including cloud availability zones and cloud geographic zones.
The term back-end database is not widely used among developers using larger or enterprise database systems. This is because enterprise database systems enforce the use of the client–server model and do not have the option to include the application programming within their databases.
A server farm or server cluster is a collection of computer servers maintained by an organization to supply server functionality far beyond the capability of a single device. Modern data centers are now often built of very large clusters of much simpler servers, [ 15 ] and there is a collaborative effort, Open Compute Project around this concept.
Coar is the author of the books Apache Server for Dummies, Apache Server Unleashed, and Apache Cookbook, and has written articles for a number of publications including Linux Magazine, ACM Queue, Linux Today, PHPBuilder, EnterpriseIT Planet, and Apache Today.
SQL Server 2014 SP1, consisting primarily of bugfixes, was released on May 15, 2015. [58] SQL Server 2014 is the last version available for x86/IA-32 systems [59] and the final version supported on Windows Server 2008 R2. [60] SQL Server 2014 had mainstream support until July 9, 2019, and extended support until July 9, 2024. [61]