| Externally-invoked routines and SQL invoked routines are combined in this class diagram. |
| The distinguishing factor is the language. |
| |
| Class diagram based on |
| Information technology - Database languages - SQL - Part 2: Foundation (SQL/Foundation) |
| WG3:ZSH-013 = H2-2002-567 = 5WD-02-Foundation-2002-12 |
| |
| 3.1.6 Definitions provided in Part 2 |
| external routine: An SQL-invoked routine whose routine body is an external body reference that identifies |
| a program written in a standard programming language other than SQL. |
| SQL routine: An SQL-invoked routine whose routine body is written in SQL |
| |
| 4.26 Externally-invoked procedures |
| An externally-invoked procedure consists of an SQL-statement and can be invoked from a compilation unit of |
| a host language. The host language is specified by the <language clause> of the SQL-client module that contains |
| the externally-invoked procedure. |
| |
| 4.27 SQL-invoked routines |
| An SQL-invoked routine is an SQL-invoked procedure or an SQL-invoked function. An SQL-invoked routine |
| comprises at least a <schema qualified routine name> , a sequence of <SQL parameter declaration> s, and a |
| <routine body> . |
| |
| |
