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Database Management Library (DBL) is a relational database management system (RDBMS) contained in a C++ programming library. The DBL source code is available under the terms of the GNU General Public License. DBL was fully developed within two weeks, as a holiday programming project. It aims to be easy and simple to use for C++ programming.
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 Relational Database Management System (RDBMS) is a type of database management system that stores data in a structured format using rows and columns.
The nested set model is a technique for representing nested set collections (also known as trees or hierarchies) in relational databases.. It is based on Nested Intervals, that "are immune to hierarchy reorganization problem, and allow answering ancestor path hierarchical queries algorithmically — without accessing the stored hierarchy relation".
Compact relational embedded database produced by Microsoft for applications that run on mobile devices and desktops. ADO.NET, OLE DB. No ODBC driver. SQLite: SQLite Open Source (Public domain) SQL database that supports in-memory storage with the :memory: connection string. [12] Tarantool: Mail.ru Group 2010 Open Source (BSD)
4D (4th Dimension, or Silver Surfer, as it was known during early development) is a relational database management system and integrated development environment developed by Laurent Ribardière. [ 3 ] 4D was created in 1984 [ 4 ] and had a slightly delayed public release for Macintosh in 1987 [ 5 ] [ 6 ] [ 7 ] with its own programming language .
[5] [6] A relational database definition (database schema, sometimes referred to as a relational schema) can thus be thought of as a collection of named relation schemas. [7] [8] In implementations, the domain of each attribute is effectively a data type [9] and a named relation schema is effectively a relation variable (relvar for short).
The relational model (RM) is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by English computer scientist Edgar F. Codd, [1] [2] where all data are represented in terms of tuples, grouped into relations.
But object databases, unlike relational do not provide any mathematical base for their deep analysis. [2] [3] The basic goal for the object–relational database is to bridge the gap between relational databases and the object-oriented modeling techniques used in programming languages such as Java, C++, Visual Basic (.NET) or C#.