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DUAL table

Index DUAL table

The DUAL table is a special one-row, one-column table present by default in Oracle and other database installations. [1]

14 relations: Charles Weiss, Firebird (database server), From (SQL), IBM Db2, Microsoft Access, MySQL, Oracle Database, PostgreSQL, Relational database, SAP HANA, SQL, SQLite, Table (database), Teradata.

Charles Weiss

Charles Weiss is an American software designer who has worked in Operations Research at American Airlines, the Dataquest subsidiary of ACNielsen as VP of Computer Systems, and Oracle Corporation from April 1982 until November 2017.

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Firebird (database server)

Firebird is an open source SQL relational database management system that "runs on Linux, Microsoft Windows, and several Unix platforms".

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From (SQL)

The SQL From clause is the source of a rowset to be operated upon in a Data Manipulation Language (DML) statement.

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IBM Db2

IBM Db2 contains database-server products developed by IBM.

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Microsoft Access

Microsoft Access is a database management system (DBMS) from Microsoft that combines the relational Microsoft Jet Database Engine with a graphical user interface and software-development tools.

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MySQL

MySQL ("My S-Q-L") is an open-source relational database management system (RDBMS).

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Oracle Database

Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is a multi-model database management system produced and marketed by Oracle Corporation.

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PostgreSQL

PostgreSQL, often simply Postgres, is an object-relational database management system (ORDBMS) with an emphasis on extensibility and standards compliance.

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Relational database

A relational database is a digital database based on the relational model of data, as proposed by E. F. Codd in 1970.

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SAP HANA

SAP HANA is an in-memory, column-oriented, relational database management system developed and marketed by SAP SE.

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SQL

SQL (S-Q-L, "sequel"; Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).

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SQLite

SQLite is a relational database management system contained in a C programming library.

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Table (database)

A table is a collection of related data held in a structured format within a database.

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Teradata

Teradata Corporation is a provider of database and analytics-related products and services.

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References

[1] https://en.wikipedia.org/wiki/DUAL_table

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