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| | ipedia.com: SQL Article |
 | | However, many database professionals have taken to the "slang" pronunciation sequel, that reflects the language's original name, Sequel, before trademark conflicts caused IBM to propagate the current moniker. |
 | | DML is the subset of the language used to query a database, add, update and delete data. |
 | | Most commercial SQL databases have proprietary extensions in their DDL, which allow control over proprietary and nonstandard, but usually operationally vital, elements of the specific system. |
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