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Database index. A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time said table is accessed.
Interment.net. Internet Archive. Internet Broadway Database. Internet Movie Cars Database. Internet Movie Firearms Database. Internet Off-Broadway Database. Internet Public Library. Internet Speculative Fiction Database. Internet Theatre Database.
Ancestry.com. For-profit genealogy company. Databases include Find a Grave, RootsWeb, a free genealogy community, and Newspapers.com. Archives.gov. US National Archives and Records Administration. Free online repository with a section dedicated to genealogical research [ 1] BALSAC. Population database of Quebec, Canada. Cyndi's List.
A relational database ( RDB[ 1]) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. [ 2] A database management system used to maintain relational databases is a relational database management system ( RDBMS ). Many relational database systems are equipped with the option of using SQL (Structured Query ...
The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is available.
This category has the following 7 subcategories, out of 7 total. Databases in England (1 C, 24 P) Databases in Northern Ireland (1 C, 2 P) Databases in Scotland (1 C, 16 P) Databases in Wales (5 P)
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 ...
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 ...