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  2. Database trigger - Wikipedia

    en.wikipedia.org/wiki/Database_trigger

    In the examples below each trigger is modifying a different table, by looking at what is being modified you can see some common applications of when different trigger types are used. The following is an Oracle syntax example of a row level trigger that is called AFTER an update FOR EACH ROW affected.

  3. View (SQL) - Wikipedia

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

    A view is a relational table, and the relational model defines a table as a set of rows. Since sets are not ordered — by definition — neither are the rows of a view. Therefore, an ORDER BY clause in the view definition is meaningless; the SQL standard ( SQL:2003 ) does not allow an ORDER BY clause in the subquery of a CREATE VIEW command ...

  4. Comparison of relational database management systems - Wikipedia

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

    External routine refers to the one written in the host languages, such as C, Java, Cobol, etc. "Stored procedure" is a commonly used term for these routine types. However, its definition varies between different database vendors. Note (2): In Derby, H2, LucidDB, and CUBRID, users code functions and procedures in Java. Note (3): ENUM datatype ...

  5. MySQL - Wikipedia

    en.wikipedia.org/wiki/MySQL

    MySQL (/ ˌ m aɪ ˌ ɛ s ˌ k juː ˈ ɛ l /) [6] is an open-source relational database management system (RDBMS). [6] [7] Its name is a combination of "My", the name of co-founder Michael Widenius's daughter My, [1] and "SQL", the acronym for Structured Query Language.

  6. MySQL Federated - Wikipedia

    en.wikipedia.org/wiki/MySQL_Federated

    It uses the MySQL client library API as a data transport, treating remote tables as if they were located on the local server. Each Federated table that is defined there is one .frm (data definition file containing information such as the URL of the data source). The actual data can exist on a local or remote MySQL instance.

  7. Select and enable a New Mail notification in AOL Mail

    help.aol.com/articles/select-and-enable-a-new...

    1. Click the Settings icon | select More Settings. 2. Click Notifications. 3. Under "New Mail," select your notification option: • Play a sound when new mail arrives - Default sound.

  8. Codd's 12 rules - Wikipedia

    en.wikipedia.org/wiki/Codd's_12_rules

    Codd's twelve rules [1] are a set of thirteen rules (numbered zero to twelve) proposed by Edgar F. Codd, a pioneer of the relational model for databases, designed to define what is required from a database management system in order for it to be considered relational, i.e., a relational database management system (RDBMS).

  9. Bank account alerts to help protect your money - AOL

    www.aol.com/finance/bank-account-alerts-help...

    These eight alerts serve several different purposes and can help you bank better. Types of online banking alerts Mobile banking alerts are often highly customizable and encourage smart financial ...