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2. Relational model - Wikipedia

   en.wikipedia.org/wiki/Relational_model

   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.

3. Comparison of data modeling tools - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_data...

   Update database and/or update model No NORMA Object-Role modeling Conceptual (ORM), Logical, Physical ORM, Relational(Crow’s foot option), Barker Yes Yes Update database and/or update model No Open ModelSphere: Conceptual, Logical, physical IDEF1X, IE (Crow’s foot), and more Yes Yes Update database and/or update model No Oracle SQL ...

4. 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 database management system used to maintain relational databases is a relational database management system ( RDBMS ).

5. List of relational database management systems - Wikipedia

   en.wikipedia.org/wiki/List_of_relational...

   Access Database Engine (formerly known as Jet Database Engine) Proprietary Actian Zen (PSQL) (formerly known as Pervasive PSQL) Proprietary Adabas D: Proprietary Airtable: Proprietary Altibase: Proprietary Amazon Aurora: Proprietary Apache Derby: Apache License 2.0 Apache Ignite: Apache License 2.0 Aster Data Systems: Proprietary CA Datacom ...

6. Database model - Wikipedia

   en.wikipedia.org/wiki/Database_model

   The basic data structure of the relational model is the table, where information about a particular entity (say, an employee) is represented in rows (also called tuples) and columns. Thus, the "relation" in "relational database" refers to the various tables in the database; a relation is a set of tuples. The columns enumerate the various ...

7. Comparison of database administration tools - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_database...

   Yes - can create table, alter its definition and data, and add new rows; Some - can only create/alter table definition, not data; Browse table: Yes - can browse table definition and data; Some - can only browse table definition; Multi-server support: Yes - can manage from the same window/session multiple servers

8. Data modeling - Wikipedia

   en.wikipedia.org/wiki/Data_modeling

   Entity–relationship modeling is a relational schema database modeling method, used in software engineering to produce a type of conceptual data model (or semantic data model) of a system, often a relational database, and its requirements in a top-down fashion.

9. Object–relational mapping - Wikipedia

   en.wikipedia.org/wiki/Object–relational_mapping

   Object–relational mapping (ORM, O/RM, and O/R mapping tool) in computer science is a programming technique for converting data between a relational database and the memory (usually the heap) of an object-oriented programming language.