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  2. Join (SQL) - Wikipedia

    en.wikipedia.org/wiki/Join_(SQL)

    Right and left outer joins are functionally equivalent. Neither provides any functionality that the other does not, so right and left outer joins may replace each other as long as the table order is switched. A Venn diagram representing the full join SQL statement between tables A and B.

  3. SQL-92 - Wikipedia

    en.wikipedia.org/wiki/SQL-92

    New set operations such as UNION, UNION ALL, CROSS JOIN, and formalized JOIN types (INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN). Conditional expressions with CASE. For an example, see Case (SQL). Support for alterations of schema definitions via ALTER and DROP. Bindings for C, Ada, and MUMPS. New features for user privileges.

  4. Comparison of database administration tools - Wikipedia

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

    Oracle SQL Developer: Oracle Corp. 2018-04-05 18.1.0.095.1630 Proprietary: Yes Yes Yes Yes Yes No Yes Yes Yes Microsoft Access, Sybase, IBM Db2, Teradata: Java: pgAdmin: pgAdmin Development Team 2024-12-12; 54 days ago 8.14 [9] PostgreSQL License: Yes Yes Yes Yes C++: phpLiteAdmin: Dane Iracleous, Christopher Kramer, others 2019-09-05 1.9.8.2 ...

  5. Relational database - Wikipedia

    en.wikipedia.org/wiki/Relational_database

    The join operation defined for relational databases is often referred to as a natural join (⋈). In this type of join, two relations are connected by their common attributes. MySQL's approximation of a natural join is the Inner join operator. In SQL, an INNER JOIN prevents a cartesian product from occurring when there are two tables in a query.

  6. Comparison of relational database management systems - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_relational...

    Microsoft Access (JET) Microsoft: 1992 16 (2016) 2015-09-22 Proprietary: No Microsoft Visual Foxpro: Microsoft: 1984 9 (2005) 2007-10-11 Proprietary: No Microsoft SQL Server: Microsoft: 1989 2022 [22] 2022-11-16; 2 years ago Proprietary: No Microsoft SQL Server Compact (Embedded Database) Microsoft: 2000 2011 (v4.0) Proprietary: No Mimer SQL ...

  7. Microsoft Access - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Access

    This support started with MSDE (Microsoft SQL Server Desktop Engine), a scaled down version of Microsoft SQL Server 2000, and continues with the SQL Server Express versions of SQL Server 2005 and 2008. Microsoft Access is a file server-based database.

  8. Surrogate key - Wikipedia

    en.wikipedia.org/wiki/Surrogate_key

    A surrogate key is frequently a sequential number (e.g. a Sybase or SQL Server "identity column", a PostgreSQL or Informix serial, an Oracle or SQL Server SEQUENCE or a column defined with AUTO_INCREMENT in MySQL). Some databases provide UUID/GUID as a possible data type for surrogate keys (e.g. PostgreSQL UUID [3] or SQL Server ...

  9. Merge (SQL) - Wikipedia

    en.wikipedia.org/wiki/Merge_(SQL)

    A right join is employed over the Target (the INTO table) and the Source (the USING table / view / sub-query)--where Target is the left table and Source is the right one. The four possible combinations yield these rules: