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  2. Referential integrity - Wikipedia

    en.wikipedia.org/wiki/Referential_integrity

    An example of a database that has not enforced referential integrity. In this example, there is a foreign key (artist_id) value in the album table that references a non-existent artist — in other words there is a foreign key value with no corresponding primary key value in the referenced table.

  3. CAP theorem - Wikipedia

    en.wikipedia.org/wiki/CAP_theorem

    Every request received by a non-failing node in the system must result in a response. This is the definition of availability in CAP theorem as defined by Gilbert and Lynch. [ 1 ] Note that availability as defined in CAP theorem is different from high availability in software architecture.

  4. Transcription error - Wikipedia

    en.wikipedia.org/wiki/Transcription_error

    Double entry (or more) may also be leveraged to minimize transcription or transposition error, but at the cost of a reduced number of entries per unit time. Mathematical transposition errors are easily identifiable. Add up the numbers that make up the difference and the resultant number will always be evenly divisible by nine. For example, (72 ...

  5. SQL - Wikipedia

    en.wikipedia.org/wiki/SQL

    SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...

  6. List of SAP products - Wikipedia

    en.wikipedia.org/wiki/List_of_SAP_products

    SAP Exchange Infrastructure (XI) (From release 7.0 onwards, SAP XI has been renamed as SAP Process Integration (SAP PI)) SAP Extended Warehouse Management (EWM) SAP FICO; SAP BPC (Business Planning and Consolidation, formerly OutlookSoft) SAP GRC (Governance, Risk and Compliance) SAP EHSM (Environment Health & Safety Management)

  7. SAP HANA - Wikipedia

    en.wikipedia.org/wiki/SAP_HANA

    SAP HANA (HochleistungsANalyseAnwendung or High-performance ANalytic Application) is an in-memory, column-oriented, relational database management system developed and marketed by SAP SE. [ 2 ] [ 3 ] Its primary function as the software running a database server is to store and retrieve data as requested by the applications.

  8. List of unit testing frameworks - Wikipedia

    en.wikipedia.org/wiki/List_of_unit_testing...

    Oracle includes a Unit Tester as part of the free SQL Developer application. Yes pl/unit [529] PL/Unit is a unit testing framework that provides the functionality to create unit tests for PL/SQL code. PL/Unit is expressed as one package that is compiled into the database and made available for use by PL/SQL unit tests. No

  9. SAP ERP - Wikipedia

    en.wikipedia.org/wiki/SAP_ERP

    SAP ERP is enterprise resource planning software developed by the German company SAP SE. SAP ERP incorporates the key business functions of an organization. The latest version of SAP ERP (V.6.0) was made available in 2006. The most recent SAP enhancement package 8 for SAP ERP 6.0 was released in 2016.