☜	OMI - Other Database Support Draft MDC Standard					☞

C.2 Other database support

Some less well defined operations are under consideration to support present and planned database functions:

• Merge: To merge a server’s tree of global variables with a client’s, an initiating and continuation request may be defined (see B.7.2). Transferring a potentially unlimited number of variables, this function may require the agent and server to retain some information across transactions.
• Combined order and get: Operations similar to order, query, and their reverse forms would return the value of the next global variable in addition to its subscript or gvn.
• Transaction processing: Support for transaction start, commit, and rollback will require careful division of functions between OMI and the application level. Distributed transaction processing is expected to require many changes to the protocol itself.
• Portability limits: Proposed expansion of several M[UMPS] language elements for portable programs will have little effect on the standard, but may require implementation changes.

Copyright © Standard Documents; 1977-2024 MUMPS Development Committee;
Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 Ed de Moel.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 14-Nov-2023, 21:51:59.

For comments, contact Ed de Moel (demoel@jacquardsystems.com)