"The equivalent to a relational database stored procedure, except that it executes on the data contents of an object, within the bounds of that object." (Gavin Powell, "Beginning Database Design", 2006)
"Within a database, a stored procedure, stored function, or trigger." (Pramod J Sadalage & Scott W Ambler, "Refactoring Databases: Evolutionary Database Design", 2006)
"A program module that is part of a user-defined data type that is used to create objects." (Jan L Harrington, "SQL Clearly Explained" 3rd Ed., 2010)
"A database object that encapsulates procedural logic to provide behavior for a structured type. A method can be implemented as an SQL method or an external method. See also external method, routine, SQL method." (Sybase, "Open Server Server-Library/C Reference Manual", 2019)
"A method that is implemented entirely by using a subset of SQL statements and SQL PL statements. See also method, routine." (Sybase, "Open Server Server-Library/C Reference Manual", 2019)
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