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2. Relational database - Wikipedia

   en.wikipedia.org/wiki/Relational_database

   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 .

3. Database Management Library - Wikipedia

   en.wikipedia.org/wiki/Database_Management_Library

   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.

4. Relation (database) - Wikipedia

   en.wikipedia.org/wiki/Relation_(database)

   In database theory, a relation, as originally defined by E. F. Codd, [1] is a set of tuples (d 1,d 2,...,d n), where each element d j is a member of D j, a data domain. Codd's original definition notwithstanding, and contrary to the usual definition in mathematics, there is no ordering to the elements of the tuples of a relation.

5. List of in-memory databases - Wikipedia

   en.wikipedia.org/wiki/List_of_in-memory_databases

   Proprietary, with a free-to-use edition (Polyhedra Lite) Relational (SQL, ODBC, JDBC) in-memory database system originally developed for use in SCADA and embedded systems, but used in a variety of other applications including financial systems. Supports data durability via snapshots and journal logging, and high availability via a hot-standby.

6. R:Base - Wikipedia

   en.wikipedia.org/wiki/R:Base

   R:BASE (or RBASE) is a relational database program for the PC created by Wayne Erickson in 1981. Erickson and his brother, Ron Erickson, [1] incorporated the company, MicroRim, Inc. to sell the database, MicroRIM, on November 13, 1981.

7. 9 Best Streaming Services To Watch Free Movies Online - AOL

   www.aol.com/9-best-streaming-services-watch...

   Websites To Watch Full Movies for Free: 9 Safe, Secure and Legal Options These sites allow you to stream movies and TV shows for free. Some don’t require you to open an account, and, if you do ...

8. Object–relational database - Wikipedia

   en.wikipedia.org/wiki/Object–relational_database

   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#.

9. Nested set model - Wikipedia

   en.wikipedia.org/wiki/Nested_set_model

   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".